Alberto Diaz and Gavin Clow. Image from Appian.

Mining investment advisor Appian Capital Advisory Limited  has expanded its technical team with the appointment of two senior underground mining engineers, Alberto Diaz and Gavin Clow. 

As Underground Mining Engineering Director and Senior Underground Mining Engineer, respectively, Diaz and Clow will be responsible for the global technical oversight and value optimization of underground mining assets across Appian's portfolio. They will also support the analysis and evaluation of potential investments in underground projects.

 Diaz is a respected mining executive and technical advisor with more than two decades of global experience across the industry. He brings deep expertise in block-cave and sub-level-cave mining methods and has held Director and Principal Mining Engineer roles at PMD Mining Consulting, as well as serving as Global Practice Lead at Zijin Mining Group. Earlier in his career, he held senior roles at WorleyParsons, Barrick Gold, Rio Tinto, and BHP.

 Clow is an experienced mining engineer who previously served as the Chief Mining Engineer at West Red Lake Gold in Ontario, where he oversaw the restart of the Madsen Mine. Prior to this role, he was Manager of Mining at Optimize Group in Toronto, leading a team of mining engineers and acting as a Qualified Person for underground, managing mine design, geotechnical studies, equipment selection and project costing.

Diaz and Clow will both support Appian’s current portfolio focus on the Rosh Pinah Zinc RP2.0 underground expansion and Atlantic Nickel’s transition to underground. 

RP2.0 comprises further underground mine development, as well as the construction of new surface facilities, including a new processing plant, the addition of a paste fill and water treatment plant, and a newly developed portal and decline to extended underground deposits. RP2.0 will almost double the mine’s production output to 170 million lb/year of contained zinc metal.