Soaring government- enforced safety stoppages at South African platinum mines have lacerated the production performances of mining companies Anglo American Platinum (Amplats) and Lonmin, latest production reports indicate.

Both companies say that they are discussing more appropriate safety mechanisms with the Department of Mineral Resources (DMR) and Lonmin warns that its metal sales and unit costs will continue to be adversely impacted should the current trend of production losses from safety stoppages persist.

Liberum Capital analyst Dominic O’Kane has a “sell” recommendation on Lonmin shares, saying that the company’s 40% revenue rise masks an “industrywide problem” of enforced safety stoppages.

All South African platinum-group metals (PGMs) miners have flagged exceptionally high 2011 safety stoppages, O’Kane says in a note.

Market face-savers for Amplats were production from the company’s new Unki platinum start-up in Zimbabwe, which is one year ahead of schedule; better performance at Mogalakwena, Amplats’ lowest-cost mine by far; and smelter reliability, which enabled Amplats to meet its promise to sell 2.6-million ounces of platinum in 2011.

The JSE-listed Amplats, headed by CEO Neville Nicolau, reported a huge 128% increase in fourth-quarter safety stoppages and Lonmin, headed by CEO Ian Farmer, simultaneously reported the “severe impact” of a 177 000 t production loss, compared with prior year period losses of 21 000 t – an eightfold increase.

The DMR inspectorate imposes the stoppages under Section 54 of the Mines Health and Safety Act, which empowers the suspension and halting of mining operations across a broad operational front, well beyond the area of immediate safety concern.

Amplats reported 32 fourth-quarter stoppages, compared with 14 during the fourth quarter of 2010 and 16 during the third quarter of 2011, bringing the total for 2011 to 81 compared with 36 during 2010 – a 125% increase.

“The time taken to have stoppages lifted has increased from two days to five days,” O’Kane said, adding that unless platinum prices rally, Lonmin’s $2-billion capital expenditure to 2015 would put pressure on its balance sheet, causing the company’s debt to rise.

The increase in Section 54 notices, in Lonmin’s opinion, increases safety risk as a result of operating momentum being interrupted.

“We have highlighted to the DMR the need to work together to establish a more appropriate mechanism that enables safety improvement without increasing the risk to safe and sustainable operations,” Lonmin adds.

Amplats said that it was continuing to engage proactively with both its workforce and the DMR to implement more effective means of addressing safety risks.

Lonmin’s refined platinum production increased 24.3% year-on-year and platinum metal in concentrate 3.5%, thanks to ore stocks on hand and consistent metallurgical recovery rates.

Amplats’ equivalent refined platinum production – which is mined ounces that are expressed as refined ounces – was down 9% year-on-year and down 13% quarter-on-quarter to 583 000 oz owing to the greater number of safety stoppages.

Offsetting the impact of the stoppages was a 7% head-grade and 4% recovery improvement at Mogalakwena’s north pit, Unki reaching steady state in the December quarter and refined platinum production being up 10% quarter-on-quarter to 710 000 oz.

Even Amplats’ platinum ounces from its pool-and-share arrangement with Aquarius Platinum, at Kroondal, were 12% lower than in the fourth quarter of 2010, owing primarily to safety stoppages, but also to limited equipment availability and the implementation of more stringent support systems.

Lonmin sold 92 863 oz of platinum and 189 590 oz of total PGMs in the quarter at a 3%-down basket price of $1 136/oz for its PGMs, with the rand basket price 14.4% higher than the prior year period.

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