Platinum ETFs are on track for their largest one-moth inflow in a year and a half following violence and deaths at a South African mine, according to a report Friday.

Platinum-backed ETFs saw their metal holdings rise by 88,821 ounces, or $133.2 million, according to a Reuters report.

Production at Lonmin’s Marikana mine has been suspended in the wake of worker protests that turned violent and resulted in the deaths of 44 people. [Platinum ETF Rises on Labor Unrest]

An ETF listed in the U.S., ETFS Physical Platinum Shares (NYSEArca: PPLT), has raised its holdings by 58,805 ounces this month, according to the article.