(File image) The Lonmin mine near Rustenburg, South Africa.

Johannesburg - A group of Lonmin workers on Tuesday allegedly threatened to kill the mine's management if they did not shut one of its shafts, North West police said.

About 200 mineworkers met at the gates of Eastern Platinum mine's shaft 30 in the morning, spokesperson Brigadier Thulani Ngubane said in a statement.

A delegation of four mineworkers met at the shaft gate with a mine representative and instructed management to close the shaft.

“It is reported that they said if the manager does not adhere to the instruction, they will return the following day, 5 September, to kill them.”

The four then rejoined the other miners at the gates and they dispersed peacefully.

Lonmin's executive vice-president of human capital, Barnard Mokwena, confirmed the events, and said the company had not opened a case with police.

Workers at Lonmin's Marikana mine have been on strike for the last three weeks, demanding a monthly salary of R12 500.

On August 16, police fired on a group of protesting workers near the mine, killing 34 and wounding 78.

Another 10 people had died earlier in the week, including two policemen and two security guards. - Sapa