SANTIAGO, Oct 7 (Reuters) - The head of Chile's

Sernageomin mining regulator said on Tuesday that the

investigation into the fatal mine collapse in El Teniente would

likely take months to finalize.

"Due to the complexity of the accident it's had to determine

an exact date," Andres Leon, Sernageomin's director told

Reuters. "But in the next few months we should have something to

report."

The July accident in Codelco's star copper mine led to the

death of six workers and was the deadliest mining accident in

Chile, the world's top producer of the red metal, in years.