PIPE MEASURING SQUARE FOR PLUMBERS AND GAS FITTERSALPHONSE C. RODRIGUEZ
The TBM had a total length of 110 m and required a crew of 20 workers, including various roles such as the pit boss, lead miner, TBM driver, erector driver, ring builders, segment feeder and belt extension operators, TBM engineer, fitters, electricians, surveyor, cleaner, and assistants. ...