Pyramo Marianelli is the senior geochemist at McArthur River Mine (MRM), Glencore Zinc Assets Australia. Pyramo joined MRM in 2012 and worked on waste rock characterisation, spontaneous combustion management and AMD prevention. From 2014 to 2018 he worked on the redesign of MRM’s principal waste rock dump (the Northern Overburden Emplacement Facility , NOEF) and the mine closure plan as the geochemistry lead for Glencore. He returned to MRM in 2019 as senior geochemist working on site water management, water treatment, and NOEF construction.