With less than 24 hours to make the legal strike effective, the union said that it is launching the preparations for its contingency plans, coordinating and communicating with its partners.
Companies issue corporate and appointment updates relating to gold, copper, silver, lead and zinc projects and mines in Brazil, Mexico, Ecuador and Chile.
Companies in Mexico and Guyana published updates on their exploration campaigns.
However, the union told BNamericas it has not yet received a notification from labor inspectorate.
Milpo and other Peruvian zinc miners posted profits in the second quarter, but struggled with rising costs.
London-based miner Anglo American aims to draw from the lessons learned during the 26 years it has been preparing its Quellaveco copper project.
Tahoe Resources' Guatemala mine appears to be destined to continue generating costs but no silver output in the foreseeable future.