Tag Archives: Ralph Shearing

Altaley Mining engages MGA Contratista Minera SA as Tahuehueto mine contractor

Altaley Mining Corp has engaged MGA Contratista Minera SA de CV as the underground mining contractor for the soon-to-be-operating Tahuehueto gold mine, in north-western Durango state, Mexico.

MGA is, Altaley says, a prominent mining contractor located in Durango city with over 20 years of underground mining  and civil engineering experience. Its clients have included Newmont (Goldcorp), Pan American Silver, Endeavour Silver, Grupo Mexico, Fresnillo, First Majestic Silver, Omega and others.

MGA is now mobilising its mining equipment (including a Caterpillar R1300G LHD and a Komatsu Joy DR-1SB hydrualic jumbo drill) to Tahuehueto to continue underground drift and stope development to advance the mine into production. Previous underground development during 2018 and 2019 completed between 70-80% of required development for the initial one to two years of mine production.

MGA will complete the development work required to initiate mine production and continue as the project’s primary underground mining contractor in the initial years of Tahuehueto’s production.

First production through the mill, which is at an advanced stage of construction, is anticipated near the end of 2021 when the first ball mill is to be commissioned. In the March quarter of 2022, the second ball mill will be installed and brought online to, thereafter, ramp up production to the mine’s anticipated 1,000 t/d capacity.

Altaley said construction at the Tahuehueto mine site is on time and budget, and management is not expecting any cost overruns at this point in time.

Ralph Shearing, CEO and President, stated: “MGA is a highly qualified professional underground mining contractor which ensures that mill feed tonnages will be available to sustain continuous milling operations on an ongoing basis. Altaley is pleased to have secured MGA as Tahuehueto’s underground mining contractor and is counting down the weeks remaining to reach production near the end of this year.”

Telson Mining ready to experiment with metallurgical innovations at Campo Morado

Telson Mining, following a strong quarter of production from the Campo Morado mine, in Guerrero State, Mexico, is making plans to boost throughput and recoveries through the potential use of grinding, leaching and flotation technologies from the likes of Maelgwyn Mineral Services, Core Group and Glencore Technology.

The mine’s throughput averaged out at 58,100 t/mth in the March quarter, with total throughput for the quarter of 174,400 t being 4% higher than the December quarter. Some 11,013 t of zinc concentrate and 1,907 t of lead concentrate was produced over the period, compared with 9,974 t and 1,916 t, respectively, in the previous quarter.

Gold, silver, lead and zinc recoveries all improved, quarter-on-quarter, in the first three months of the year, the company added.

Ralph Shearing, Telson CEO and President, said: “These strong first quarter results continue to reflect our steady progression of improving the throughput and recoveries at Campo Morado. To this end, management intends to initiate a rigorous metallurgical testing program to advance through second phase testing the Leachox™ Process of Maelgwyn Mineral Services and the Albion Process™ of Core Group, both of which returned positive test results in first phase testing.”

He said this metallurgical testing program will also study the ability to increase base metal recoveries at microfine grinding with flotation recovery using Imhoflot Flotation (also Maelgwyn) and Jameson Cell (Glencore Technology) flotation technologies, both designed for such purposes.

“We are confident that additional recovery improvements are available utilising these exciting modern technologies which, if successful, can provide increased revenue streams,” Shearing added.

Maelgwyn’s Leachox Process consists of several Maelgwyn proprietary processes linked together including Imhoflot G-Cell flotation technology, ultra-fine grinding using the Ro-Star mill, Aachen Reactors and Aachen assisted cyanide destruction.

The Albion Process, meanwhile, is a combination of ultrafine grinding and oxidative leaching at atmospheric pressure. The feed to the Albion Process is refractory base or precious metal concentrates, where the sulphides in the feed are oxidised and liberated, allowing the target metals to be recovered by conventional means.