我觉得可能是由于操作不慎造成的。

I am in the opinion that this may be caused by careless handling.

youdao

分析认为，该事故属人为因素导致，即可能是装药过程中操作不慎。

Analysis shows that the accident is caused by manmade factors and possibly by incorrect operation in charging process.

youdao

该吊杆的损坏是由于该轮船员在将吊杆放低时因操作不慎而变成千斤索越过棘轮，钻井压缩机。

The dwasera of the derrick was due to the careless heachdling of the ship's crew in lowering the derrick;

youdao