The well site shall be equipped with: 1 well chief, 1 assistant well chief, 1 drilling engineer, 1 mud technician, 1 computer room technician, 1 safety officer, 1 material keeper,/kloc-

There are three classes of workers: each class needs a driller (monitor), an assistant driller, a derrick man, an internal assembler, an external assembler, a diesel engine engineer, a field worker and a mud worker.

This type of work is a special operation in coal mine and must be certified.

1, coal mine electrical operation (underground electrical fitter)

2, coal mine blasting operation (underground blasting);

3, coal mine safety monitoring operation (monitoring electrician)

4, coal mine gas inspector (gas inspector)

5, coal mine safety inspector (safety inspector)

6, coal mine hoist operation (main driver)

7, coal mine shearer (roadheader) operation (shearer driver, roadheader driver);

8, coal mine gas extraction operations (gas extraction workers);

9, coal mine outburst prevention workers (outburst prevention workers);

10, coal mine drainage operation (drainage hydraulics)