Government-brokered labor talks between company and union officials at Southern Copper are due to be held in a bid to end an 11-day strike.
Vancouver-based mining exploration companies Alsett Energy, Kootenay Silver, Evrim Resources and Lico Energy Metals provide operating updates.
The contract is to provide engineering, procurement and field support services at the mine's acid plants.
A roundup of the latest news from junior mining companies operating in Colombia, Argentina, Ecuador and Peru.
The country's largest miners boosted copper and molybdenum output in February as production of precious metals, lead and tin slumped.
The company plans to use the funds on its majority-owned assets, which include Chile's Candelaria mine.
A solid fiscal position after a decade of steady economic growth will enable the country to tackle an infrastructure rebuilding drive estimated to cost as much as US$9bn.