The Duchess of Cambridge left Court 14 after watching British player Harriet Dart lose her first set.Asked if she had enjoyed the tennis, she said: “Very much so.” Kate makes her way through Wimbledon to courtside We have royalty in attendance today!The Duchess of Cambridge is watching Harriet Dart on court 14#wimbledon #bbctennis pic.twitter.com/dSsl5bfUfz— BBC Tennis (@bbctennis) July 2, 2019 She went on to win the match in two hours and 19 minutes, saying afterwards that it was “pretty surreal” to have the duchess watching her play. Kate in the Royal Box on Tuesday afternoonCredit:Eddie Mulholland For The Telegraph Kate makes her way to Court 14Credit:Reuters The Duchess told the children: “I love tennis, I think it’s a great sport. I was really sporty when I was little, less so now that I’ve got lots of babies.”She has been a regular guest at Wimbledon since making her first visit as a member of the royal family in 2011.Dart, 22, is ranked 182nd in the world and is a Wimbledon wildcard entry. “She was very interested to hear what my thoughts were and what Katie’s thoughts were on the game, she was clearly enjoying the tennis as well.”Keothavong said she had also discussed the remarkable win of 15-year-old Cori Gauff, known as Coco, over Venus Williams on Monday.”Yes we spoke about that and she was very impressed with Coco’s performance,” she said. The Duchess of Cambridge on Court 14Credit:Getty Asked if Kate’s presence had affected her game she replied: “I don’t think so. I don’t even know at which point she left.”Obviously I was just aware she was there at the start, as the chair umpire informed me.”The British number four added: “It’s pretty cool to have royalty watching you. Such a privilege for me for her to get to see me play.”Hopefully she’ll come to many more of my matches,” she said.Speaking after the match’s first set, Keothavong said of the duchess: “It’s brilliant to have the opportunity to sit there and chat to her and talk about Fed cup and British players and I guess just everything and anything about tennis. The Duchess of Cambridge has swapped the Royal Box for a low-key seat on the Wimbledon outer courts, as she lends her support to British wildcard player Harriet Dart. The Duchess, who is patron of the All England Lawn Tennis and Croquet Club, will spend the day at Wimbledon meeting players and watching the second day of action.Expected to sit in the centre court Royal Box as usual for the most high profile matches of the day, she surprised ticket-holders on Court 14 this morning to watch Dart play American Christina McHale.She was accompanied by players Anne Keothavong and Katie Boulter, joined by a small number of staff and security in the ordinary seats in Wimbledon’s outer courts. The Duchess is a regular at Wimbledon, usually joined by members of both the Royal Family and the Middletons throughout the fortnight. She has previously spoken of queuing up for tickets as a young woman, finally getting in late in the day to soak up the “special” atmosphere of Henman Hill and the ground courts.  The Duchess of Cambridge on Court 14 Kate makes her way through Wimbledon to courtsideCredit:Getty A spokeswoman for the All England Club said: “We are delighted that the  duchess in her capacity as Patron of the AELTC was keen to see the full breadth  of The Championships and we were pleased to facilitate a visit to watch play on  the outside courts and to watch practice at Aorangi Park.” Last year, the Duchess joined a tennis training session at a primary school in Mitcham, south London, and joked at the time how she was less “sporty” now she has children.The youngsters at Bond Primary were receiving training sessions under the Wimbledon Junior Tennis Initiative – the outreach programme of the All England Club. Kate makes her way to Court 14 The Duchess late took her seat in the royal box to watch Roger Federer play Lloyd Harris. She will also be touring the grounds, visiting a number of courts throughout the day. Kate in the Royal Box on Tuesday afternoon The Fed Cup captain said it was a “real honour” for Dart to have the duchess watch her play.She said: “Before they started the match actually I’m pretty sure I caught Harriet’s eye looking over and smiling at the coin toss.”Sign up for our free newsletter,  Your Royal Appointment for exclusive insight from Camilla Tominey and Hannah Furness. read more

Ottis Gibson is to remain with the England squad throughout the Test series against West Indies.While Gibson, the England bowling coach, is expected to be unveiled as South Africa’s new head coach within days – possibly by the end of this week – he will not start his new role until after the end of the third Test, which starts on September 7.Although Gibson is contracted to the ECB until the end of the 2018 season, it is understood that the ECB and CSA have now agreed a compensation package which allows him to leave early.Gisbon and CSA are still negotiating his own contract details, though it is not anticipated that there will any change of heart from either party at this stage.With Gibson expected to have left the ECB ahead of the limited-overs matches against West Indies – there are five ODIs and a T20I scheduled before the end of September – England may need to appoint an interim bowling coach.In the longer-term, the likes of Richard Johnson (currently with Middlesex) and Graeme Welch (currently with Leicestershire) are front-runners for the role. ESPNcricinfo revealed last week that Darren Gough, who recently worked with England Under-19s, could gain some sort of consultancy role working with the white-ball teams. (ESPNCricinfo) Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)RelatedGibson set to be named as South Africa coachAugust 11, 2017In “latest news”Ottis Gibson confirmed as South Africa’s head coachAugust 30, 2017In “latest news”Gibson sacked as West Indies Coach with immediate effectAugust 19, 2014In “Sports” read more

Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Related1 in custody over discovery of firearm, ammo at ItaballiMarch 21, 2016In “Crime”Police destroy ganja…guns and ammunition recovered at SoesdykeMarch 19, 2016In “Crime”Minibus passenger found with illegal gun, ammoAugust 17, 2016In “Crime” A truck driver is now in the custody of the Police after he was early this morning discovered with an unlicensed pistol and ammunition in his possession.The 27 year old suspect of Adams Road, Soesdyke was arrested at Back Road, Soesdyke, East Bank Demerara (EBD) at around 04:20hrs.According to reports, ranks of the “A” Division who were on mobile patrol swooped down at the location where the man was found with the firearm along with ten live rounds of ammunition.He is in Police custody and is expected to precede the Court shortly. read more

Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)RelatedConfusion rife over GuySuCo’s Senior leadershipApril 13, 2018In “latest news”Any GuySuCo board headed by Thomas could be illegal – NandlallApril 17, 2018In “GuySuCo board illegal – Nandlall”Govt’s scant regard for Sugar industry evident by absence of GuySuCo Board- GAWUJuly 26, 2018In “Business” Agriculture Minister, Noel Holder told reporters on Thursday that Cabinet is still continuing deliberations on the appointment of a Board of Directors for the Guyana Sugar Corporation (GuySuCo) while adding that new names are being looked at.Agriculture Minister Noel Holder“Well we’re discussing. We’re discussing names. Couple names. We are discussing couple names,” he said.Of recent, there have been reports of an apparent tug-a-war within the Coalition over the sugar industry, which is now under the control of a Special Purpose Unit (SPU) that was created under the National Industrial and Commercial Investments Limited (NICIL) for the divestment process.In fact, last month NICIL published the names of the new board in an advertisement but State Minister Joseph Harmon shortly after said that there were some issues with regards to the timing of the publication and that Cabinet was reviewing the matter.According to the advertisement which placed in the local dailies on Wednesday, March 14, 2018, the new Board was approved by Cabinet on February 26, 2018 and the appointments took effect on March 1.Reports have since surfaced about disagreements allegedly between Ministers from the two coalition parties regarding the chairmanship and members of the GuySuCo Board.However, Minister Holder today brushed aside those reports of an apparent power struggle, saying his ministry is constitutionally responsible for the sugar industry.SPU Head and proposed GuySuCo Board Chairman, Colvin Heath-London“The Corporation is totally and solely on the Government of Guyana. The Ministry of Agriculture answers to Parliament for what happens in GuySuCo and I am accountable to this Nation for its activities. Therefore, the Ministry of Agriculture should have responsibility for GuySuCo, therefore the Ministry of Agriculture will appoint a board,” he explained.The Agriculture Minister went onto outline that NICIL is a creature of the Government and thus carries out instructions from the Executive.“NICIL is a creature of the Government. NICIL is a holding company . It holds the shares for GuySuCo, it holds the shares for GuyOIL,  it holds the shares for GPL. It’s a holding company. It is not a Government and therefore carries out instructions of the Government…perhaps someone didn’t tell NICIL their role,” he said. read more

Luke Ronchi smashes the ball during his cameo (Getty Images)ESPNcricinfo– Barbados Tridents’ home performances make Jamaica Tallawahs’ American nightmare look tame by comparison. The Tridents lost their fourth straight match at Kensington Oval in an eight-wicket trouncing at the hands of Guyana Amazon Warriors courtesy Luke Ronchi’s unbeaten 40-ball 67. This helped Warriors to the top of the table, while Tridents are firmly rooted to the bottom and are on the verge of missing the playoffs for the third year in a row.Prime time performance It looked like Tridents were going to escape the Powerplay without much damage, but that changed in the sixth over. Rebuilding after the loss of Martin Guptill, Tridents were 39 for 1 when Roshon Primus snared Dwayne Smith thanks to some good fortune mixed with loose strokeplay.Recalled after their loss to Tallawahs two nights earlier, Dwayne Smith looked in excellent touch before holing out to a flick at deep square leg. Shimron Heymyer was one of only two men outside the ring. When he snared Hashim Amla, who spooned a catch to point as the ball stopped on him, Primus on a hat-trick.Shai Hope and Steven Smith shared a half-century stand, during the course of which the pair impressed with their sublime wrist work. Primus then made his mark on the field, charging in from square leg with a sharp one-bounce relay to Ronchi to deny a second run for Hope in a needless run-out.Tahir’s brilliant finish Steven Smith and Nicholas Pooran gave the Tridents hope with a 71-run stand, but three wickets fell in the final eight balls of the innings in another major momentum shift. Steven Smith fell to a brilliant diving catch by Chris Green running in from the rope at long on, his second take of the night, to make it 160 for 5.Pooran had played splendidly to that point, cracking four fours and two sixes in a typically fiery knock, but the Tridents needed a big over to close out the innings. Imran Tahir denied them in masterful fashion. After conceding four runs off the first three balls, Tahir struck with a googly to induce a skied catch to get Pooran at long-off. This was well-taken in swirling wind by Hetmyer. After a dot to Jason Holder, Tahir got him driving a third catch to Green at long-on to close the innings.So close… yet so so far Ronchi had struck his first two balls of the night for boundaries off Chemar Holder to end the second over, but the Tridents nearly got him twice in the following over.The in-form Mohammad Irfan gave Ronchi the most trouble he’d encounter on the night as a drive on the second ball of the third over fluttered just out of the reach of Ashley Nurse at mid-on and bounced away for four. Ronchi was squared up by Irfan’s next ball and a healthy edge barely evaded slip to go to third man for one.From then on though, Ronchi was in total control, perhaps never more so than in the sixth over from Jason Holder off which he plundered 22. Warriors ended the Powerplay at 70 for 0 with Ronchi on 39 off 15 balls.Ronchi only faced 10 deliveries – scoring 10 singles – across the next five overs, but if the Tridents strategy was to slow down the scoring rate by starving Ronchi of the strike then it wasn’t working.Walton provided brilliant support during a 96-run opening stand before Hetmyer hit his fourth, sixth and seventh balls over the rope for a trio of sweetly timed sixes. By the time Ronchi finally brought up his 50 off 26 balls with a single in the 12th over, the required run rate was well under a run a ball and the Warriors strolled home. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)RelatedWarriors move to the top of Hero CPL 2016 as Tridents hopes endJuly 31, 2016In “Sports”CPL 2017: Warriors face Tridents today in another crucial matchAugust 29, 2017In “latest news”Hope, Reifer seal a winning start for the TridentsAugust 12, 2018In “latest news” read more

first_imgGFMS launched its annual Copper Survey this week, which estimates that the copper market was in surplus of 777,000 t in 2009, as falling consumption in the majority of key markets more than offset the growth noted in China and production continued to increase, albeit at the margin. The consultancy said the main driver was strong investment demand for the red metal throughout the year. It noted global mine production increased by 2.4% in 2009, to reach 15.8 Mt, with rises in Africa and Asia, amounting to 14% and 15% year-on-year respectively. North American declines were partly offset by growth in Chilean production, culminating in output in the Americas overall falling by 1.9%.As Neil Buxton, Managing Director of the Base Metals division of the consultancy noted, “despite this outcome, prices climbed 141% from their annual low in January of a little more than $3,000/t to an end-year peak of $7,346/t, before rising further in the new year, peaking recently above $7,800/t”.Support was also provided by official stockpiling in China, an increase in work-in-progress inventories in the same country as well as modest improvements in supply-demand conditions as the year progressed, especially compared to their dire state in the first few months of 2009.GFMS: “although copper’s supply/demand fundamentals were negative for the price in 2009 and remain uninspiring this year-to-date, the outlook for them in the longer-term is positive for prices. Given projections of a persistently tight concentrate market, it is difficult to see how production will be able to keep up with the consumption recovery expected going forward. Realisation of this has undoubtedly been a principal factor driving investors to the red metal and can in large part explain why copper has outperformed the majority of other commodities.”One issue the Copper Survey addresses is the short to medium-term outlook for copper prices. “The key question here”, Buxton argued, “is whether the momentum provided by investment demand will be maintained through to a time when an improvement in supply-demand conditions can take over the reins. Developments so far this year suggest that the answer is yes.” The limited extent of the recent correction and the fact that speculators and consumers found prices well above $6,000/t low enough to rush back into copper is supportive of this view.At the same time, GFMS acknowledges the price currently stands at levels already elevated and that in the upper-$7,000s it is difficult to see a new wave of money moving into the market, at least until the time when supply-shortages emerge. Elsewhere, it says, “yield-hungry speculators are likely to actively trade copper-related news, macro developments and movements in other asset classes and this will likely maintain considerable volatility in the price.”To conclude, GFMS expects that the above forces will most probably see copper prices go through a period of consolidation over the next few months and breaches through the February low and the end-March high are expected to be limited and short-lived. As the market moves into deficit towards the end of 2010, strong investment demand is likely to re-emerge. This will probably lead to more noteworthy advances and GFMS would expect copper prices to exceed $8,000/t before the end of the year.Highlights of the report include:Estimated global average cash costs (C1) declined by 5.9% in 2009 to reach 99.5 ¢/lb, equivalent to $2,194/t. The decline was fuelled by weaker producing country currencies, lower input prices and higher gold by-product creditsGlobal refined production rose by 0.9% last year to reach 18.4 Mt. A tight concentrate market compounded with lower scrap availability, in the aftermath of the collapse in copper consumption in the second half of 2008 and over much of last year, limited growthIn spite of dire conditions in most key markets, global consumption posted a limited decline of 1.7% last year, to reach 17.6 Mt overall. The relatively benign outcome was almost exclusively due to China’s 26% year-on-year growth, fuelled by an aggressive fiscal stimulus and loose monetary policy in the country. In contrast, demand in the majority of mature economies posted double digit declines.last_img read more

first_imgWith a solid reputation of providing the mining industry with manufactured and re-built rugged, dependable jaw crushers for almost 50 years, PR Engineering says it has taken its proven design technology to a new level, but this time by downsizing. Co-conceived between PR Engineering and Heath & Sherwood, a “mini” version of their industry-leading Birdsboro Buchanan crushers is being unveiled at MINExpo 2012 in Las Vegas that provides the performance of a production crusher in a lab package.The unit is the only crusher in its class that features double-toggle action. This means better crushing performance which results in a more consistent final product, less effort to crush the same amount of rock and reduced wear on moving parts. Weighing just 2,300 lb, it’s a portable, robust, 6 x 10 crusher that is ideal for sampling stations, pilot plants, prospecting, exploration, labs and quarries, and for use in adverse conditions where smaller lab crushers would be ineffective.last_img read more

first_imgGlobal seals and bearings supplier SKF states that its new @ptitude Connect software solution “gives engineers easy access to a cost-effective cloud computing resource for condition monitoring software that will improve plant efficiency.”SKF @ptitude Connect enables operations to implement plant-wide or enterprise-wide Condition Based Maintenance (CBM) and/or Predictive Maintenance (PdM) program via the internet. Using the SKF cloud service, engineers can access machine data, analyse or display machine conditions and view printable diagnostic reports. SKF @ptitude Connect is suitable for all running equipment, such as fan systems, pump systems, compressors, and will benefit a wide range of industries, including mining.SKF @ptitude Connect addresses a common problem faced in many facilities, which is that there is not enough time or money to purchase and manage the required software. By using SKF @ptitude Connect to access subscription-based software customers can boost equipment reliability and availability without costly investment. “With SKF @ptitude Connect, customers can improve plant equipment reliability, increase equipment/asset availability and reduce initial capital investments for predictive maintenance programme start-up costs,” says Luis F Econom, Asset Diagnostic Services and Systems Engineering Manager.“The solution is also flexible in the sense that it is scalable to demand. It is about solving and saving.”SKF @ptitude Connect is compatible with SKF handheld or online condition monitoring data collection devices, enabling end-users to operate their CBM or PdM programs just as they would with on-site software, bringing reduced IT operating and maintenance costs. Compliant with ISO 27001 and SSAE16, SKF’s cloud protects data integrity in key areas of concern, such as data access, data transmission, data storage and data center access. Because the service is cloud-based, installation is fast, with operational availability typically achieved within days. This enables standardisation of machine condition diagnosis and analysis practices across multiple sites without the overhead costs of an operating system, servers, software upgrades, database licensing and backup systems.last_img read more

first_imgBHP Billiton President Iron Ore, Jimmy Wilson, has announced plans to cut unit costs at Western Australia Iron Ore (WAIO) by at least 25% and the potential to increase capacity there by 65 Mt/y at a very low capital cost. Wilson outlined BHP Billiton’s view of the long-term supply and demand trends in the iron ore market. “We continue to see healthy demand growth for iron ore in the mid-term as Chinese steel production is expected to increase by approximately 25% to between 1.0 and 1.1 billion tonnes in the early to mid-2020s,” he said. “Meanwhile, steel production growth in other emerging economies is outpacing China as those nations urbanise and industrialise. We expect to see a compound annual growth rate for global steel production of between 2.5 and 3.0% between now and 2030.“Unsurprisingly, high prices over the last decade created the incentives needed for new entrants to join the market and traditional producers to substantially increase supply. As a result, growth in seaborne supply is expected to exceed growth in demand over the short to medium term. In anticipation of this transition, we turned our focus from major supply chain investment to productivity, cost reduction and capital efficient growth more than two years ago.”Wilson highlighted the quality and footprint of the WAIO operations which consist of the four main joint ventures Mt Newman, Yandi, Mt Goldsworthy and Jimblebar. “We have the strongest resource position in Western Australia and the quality of our orebodies will help us sustain strong margins over the long term. We have already significantly cut the cost of production at WAIO and plan to go further,” he said.“We expect unit cash costs of less than $20/t in the medium term, a reduction of more than 25% on the average achieved in the 2014 financial year. “Our reserves are concentrated around our four major mining hubs which will support a lower level of sustaining capital expenditure than required by our peers. With annual sustaining capex of approximately $5/t over the next five years, we aim to be the lowest cost supplier to China on an all-in cash basis.”Wilson also said BHP Billiton could add 65 Mt of capacity at WAIO at a capital intensity of some $30 per annual tonne, taking total system capacity from 225 Mt/y to 290 Mt/y by the end of the 2017 financial year.“The economics of further increasing our production are compelling. We completed our major supply chain investments some time ago and have since focused on using BHP Billiton’s benchmarking systems to improve the performance of our equipment by systematically tackling the bottlenecks,” he said. “We now expect to increase WAIO mine capacity to 275 Mt/y without the need for additional fixed plant investment. Beyond that, the Inner Harbour Debottlenecking and Jimblebar Phase 2 projects will help us to reach 290 Mt/y of supply chain capacity at low capital cost.”last_img read more

first_imgDavid Duckworth of consulting company Saint Barbara notes that “the issue of high-arsenic (high-As) copper concentrates has been highlighted recently with the start-up of a number of new projects producing this material.“Copper concentrates can be divided into clean or complex types,” he writes in the company’s latest newsletter. ”The main impurities (deleterious or penalty elements) in complex concentrates are Sb, As, Bi, Cd, Cl, F, Pb, Hg, U and Zn. Each element has a threshold level above which a smelter will charge a penalty in addition to treatment/refining charges (TC/RCs). There may also be an upper limit over which the smelter will reject the concentrate. Penalty charges exist to cover the extra costs incurred by the smelter in processing and safely storing contaminated (deleterious) materials.“In 2014/15, production of complex concentrate increased significantly and the volume of complex concentrates available on the market is expected to rise by 700% between 2013 and 2016. New mines, such as Toromocho in Peru (1% As) and Ministro Hales in Chile (4% As), are producing complex concentrates, while As content in concentrates produced at existing mines, including Marcapunta in Peru (8% As), Chelopech in Bulgaria (6% As) and Chuquicamata in Chile (1.2% As), has risen.“Around 30% of world copper concentrates output contains more than 0.1% or 1,000 ppm As. complex copper concentrates have an As content greater than 0.2% (2,000 ppm) with no upper limit, although China imposes a limit of 0.5% As (5,000 ppm) on imported base metal concentrates.“Many copper smelters able to process “dirty” or complex concentrates prior to the 1990s, have either stopped this practice or closed for environmental reasons. These smelters include La Oroya in Peru, San Luis de Potosi in Mexico, Tacoma in the USA, Rönnskär in Sweden, PASAR in the Philippines and Kosaka in Japan.“Currently only a few copper smelters – Tsumeb in Namibia (see map), Altonorte in Chile, Guixi in China and Horne in Canada – can process complex concentrates and Tsumeb is the only option for large volumes of very high-As concentrates, with >1% As. These smelters will charge a penalty to treat high-As concentrate, while Tsumeb charges higher TCs to treat complex concentrates.“In the past, Godfrey and Nicholas-Herreschoff roasters were often used to fume off the As in very high-grade com-plex concentrates to produce arsenic trioxide (As2O3) and calcined copper concentrate with a much reduced As content. Roasters were either located at the mine site or adjacent to a smelter. The only such roasters in operation to-day are those at Tsumeb.“Codelco has installed an Outotec Partial Roaster at its Ministro Hales mine to reduce the As content of the copper concentrates. The fluid bed partial roaster processes high-As copper concentrate to produce a calcine with a low As content and high-copper concentrate. The roaster complex has an integrated effluent plant which removes the As content from the process water. Effluent is treated using calcium arsenite precipitation.“Blending is the most common solution to the problem of treating high-As content in copper concentrates, where high-As concentrate is mixed with clean copper concentrate to dilute the As content to acceptable levels for smelters. As there are only four smelters worldwide which can treat high-As material, capacity is limited. Since 2014, the volume of high-As concentrate has exceeded treatment capacity in smelters.“During 2014, Codelco set up a strategic alliance with Ocean Partners to blend high-As copper concentrate from its Ministro Hales mine with clean third-party concentrate(s) bought in by both companies, at Ocean Partners’ concentrate blending facility in Taiwan. As the blended concentrate grades less than the Chinese custom cap of 0.5% As, it can be sold to Chinese smelters.“EcoMetales‘ Copper Flue Dust Treatment Plant (PTPA for its acronym in Spanish) and Arsenic and Antimony Abatement Process (PAAA for its acronym in Spanish), located near Calama in Chile, treat smelter flue dust, refinery effluent and other solid hazardous wastes from Codelco’s Chuquicamata, Potrerillos (Salvador) and Ventanas smelter and refinery complexes. These products may contain up to 30% Cu and deleterious levels of As (5-17%), bismuth and antimony. In the PTPA plant, dust is acid leached to produce copper pregnant leach solution which is pumped 7km to Codelco’s Chuquicamata mine, where it is used to produce copper cathodes. The leaching waste (with 7% Cu) is dried and conditioned before being sent to the Chuquicamata smelter for processing.“The PAAA plant treats copper-rich solution produced by the PTPA and leached waste from the PTPA, to recover copper, together with scorodite (FeAsO4·2H2O), the environmentally stable form of As. The scorodite is disposed of at a site 1km from the plant, which meets all environmental standards.“Several hydrometallurgical technologies — atmospheric leaching, bio-oxidation and pressure leaching — are available for processing high-As concentrates. Few have achieved commercial application.“One example is CESL high pressure oxidation technology, promoted by Teck Aurubis. A small industrial scale plant operated successfully from 2008 to 2010 for Vale in the Carajás region of Brazil. It is claimed that more than 99% of the As remains undissolved in the leach residue. The copper is dissolved and follows a conventional SX/EW route to cathode. Gold in the concentrate reports to the leach residue from which it can be extracted by cyanidation – with little or no dissolution of As. Silver could be treated similarly, although the quantity reporting to the leach residue is not determined.“In the short and medium term, the problem of high-As copper concentrates will be alleviated somewhat by Codelco’s roaster reaching full capacity, the decline in the As level in the Toromocho concentrate, new mine capacity coming on-stream producing clean concentrates and a possible expansion at Tsumeb.“In the long term, however, the trend towards the exploration of more difficult deposits will continue. Although these new projects will be delayed due to copper price decline, many of them will produce concentrates with elevated levels of As.“The problem of treating high-As concentrate is not going to go away and will be overcome by continued blending, use of existing technology and the development of new technology.last_img read more