The operation was halted on Sunday after a group of hooded individuals stormed into the mine's facilities the day before.
"Operations at the Los Bronces mine will remain completely suspended until we have the minimum necessary guarantees to operate safely and without risk," Anglo said in a statement on Sunday.
As of Monday morning, operations were still halted, a company spokesperson told BNamericas via email.
Anglo said it is serving as a mediator between contractor companies that provide services to Los Bronces and the Los Bronces subcontracted workers federation, after the latter requested a revision of a 2014 agreement due to expire in April next year.
The resource giant's Anglo American Sur division, comprising Los Bronces (pictured) and the smaller El Soldado mine, produced 437,800t copper in 2015. Production between January and September this year was down 16.2% to 266,200t.