The workers of the US mining giant blocked the road to the Grasberg mine in Tembagapura, in the regency of Mimika, Papua.
The demonstration was an expression of concern over a number of accidents in the mines, a spokesman of the protester said.
The most recent accident was on Saturday killing four workers in Grassberg.
The company management ordered the workers to resume work after they were given day off since Saturday but the workers refused, instead they staged the protest.
The workers demand that the management account for the series of accidents, which had killed at least 44 miners.
Spokesman of the Papua regional police Sr. Comr. Pudjo said he had not received report of the demonstration.
"Let check first and find informaityon from Minika," Pudjo said. (WDY)
: I Gusti Bagus Widyantara
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