In 2003, Angulos was driving excavation equipment in a large copper mine when he felt a rush of air.

2003年，安格洛斯在一个大型铜矿矿山驾驶采掘设备时，突然感到了一股气体扑面而来。

Roadheader is an import excavation equipment, but its stability is connected with its working efficiency.

掘进机在挖掘设备中具有重要作用，而掘进机作业稳定性与生产效益密切相关。

The benches allow equipment and personnel access to the fresh ore (gray) exposed at the bottom of the excavation.

这些平台是使（采矿）设备和工人抵达矿坑底部，到新挖出来的矿石（灰色）面前的通道。

May operate excavation machinery and other heavy equipment.

操作挖掘机械等重型设备。

Confined Space Potentials exist when the excavation is exposed to hazardous gases from nearby process operations or mobile equipment.

当开挖暴露于来自邻近工艺运转或动设备的气体时，受限空间存在潜在的风险。