The oil industry has also developed remotely-operated vehicles to make trenches for seabed pipelines, which can be adapted for cutting ore, even though it may lie much deeper, at, say, 1.5km down.

• 并且，石油工业已经开发出可用于海底管道挖槽的遥控船，可以经过改造用来切割矿石，即使这些矿石在1.；5千米以下也没问题。