Glencore leads miners group in cobalt blockchain pilot Child miners as young as 11 in eastern Congo. ( Mining and commodities trader Glencore (LSE: GLEN) has joined forces with battery material supplier Umicore and other major miners to trace the cobalt they produce using blockchain technology. The group, which includes Eurasian Resources Group (ERG) and China Molybdenum (CMOC) are piloting Re|Source, a solution to track responsibly produced cobalt from mine to electric car. Tested in real operating conditions, from upstream cobalt production facilities in the Democratic Republic of the Congo (DRC) to downstream electric vehicle production sites, the pilot will run until the end of 2021, with the roll-out of the final solution expected in 2022.