This is the second wave of pressure that investors concerned about ESG issues have laid on miners after successfully forcing mine waste standards updates in 2020.
Xu Xiao was based at the LME's Singapore office and had also served as vice president, corporate sales for Asia since September 2016 before leaving at the end of February.
Technique takes samples of gold from a mine or supplier and creates a complex chemical and physical blueprint for the material against which subsequent shipments can be checked.
The company has signed a memorandum of understanding with Porto do Açu, a major Brazilian seaport and industrial hub, to study the feasibility of installing a 300-megawatt green hydrogen plant onsite.