BARBERTON - The Lily Mine collapse is commemorated for the third year after 100 mineworkers were injured and three were trapped underground.
The bodies of Pretty Nkambule, Yvonne Mnisi and Solomon Nyarenda have never been retrieved.
They disappeared when a container they were in, fell into a sinkhole.
Around the same time last year, more than 950 workers were trapped for two nights at the Sibanye-Stillwater's Beatrix gold mine in Free State.
The incident happened after a power outage.
There were no fatalities and all workers were rescued.
The Lily Mine went into business rescue after the accident.