The 2,500 workers at the mine walked off the job on June 1, complaining about plans to cut health and medical benefits for retirees as well as minimal wage increases.
Socialist Pedro Castillo was closing in on victory in Peru's presidential election on Thursday, holding a slim lead of some 63,000 votes over conservative rival Keiko Fujimori.
The company in March announced an ambitious plan to increase its production capacity roughly fivefold to 600,000 tonnes of lithium carbonate equivalent a year.
The shouting will resume on Sept. 6, when the nine ring-dealing members of the LME take their red leather seats after more than a year's coronavirus-induced break.