kuàng / gōng / zhèng / zài / gōng / zuò / miàn / shàng / jiǎn / chá / shè / bèi / zhǔn / bèi / kāi / shǐ / zuò / yè

矿工正在工作面上检查设备，准备开始作业。

The miners are checking equipment at the coalface before starting work.