SANTIAGO, Aug 25 (Reuters) - Chile's mining regulator

Sernageomin has added requirements for Codelco to restart areas

affected by a deadly collapse at its El Teniente copper mine in

July, according to a Sernageomin document seen by Reuters on

Monday.

The company will now have to have a monitoring and control

plan overseeing the stability and safety of mining operations in

all of its underground deposits in the mine to resume operations

in the areas that remain shuttered, the document said.