Harmony Gold is expected to lose up to 40 kg (1,412 ounces) of gold at its Elandsrand mine due to a two day closure following a fatal accident, a company official said on Monday.

It's expected that the mine will not produce gold for at least two days, today and tomorrow, to enable us to finalise the investigation, Harmony Chief Operating Officer Alwyn Pretorius told Reuters.

Pretorius said the mine would lose between 30-40 kg of gold as a result of the stoppage after a worker was killed at the mine.

Harmony -- the world's fifth and Africa's third-largest gold producer -- halted production at Elandsrand after a worker died from injuries sustained when a seismic event caused a fall of ground there on Saturday.

Investigations were being carried out by the Department of Minerals and Energy and mine management, and were likely to be finalised on Tuesday, he added.

The Elandsrand mine, Harmony's biggest operation, suffered a slump in output in the first quarter to September last year owing to safety issues.

Chief Executive Officer Graham Briggs said then that the mine would be in intensive care for six to 12 months, undergoing a review of operations to boost output and safety.

Harmony said gold output jumped 6 percent to 396,803 ounces or 12,342 kg in the September quarter, and forecast output at 12,500 kg in the December quarter, at lower cash costs.

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