Pacific service magazine (1924) (14781603525)

Identifier: pacificservicema1627paci (find matches)
Title: Pacific service magazine
Year: 1912 (1910s)
Authors: Pacific Gas and Electric Company
Subjects: Pacific Gas and Electric Company Electric utilities Electrical engineering Public utilities
Publisher: San Francisco : Pacific Gas and Electric Company
Contributing Library: San Francisco Public Library
Digitizing Sponsor: San Francisco Public Library



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speed in boringthe tunnel. In-stead, the speedbecame dependentmainly on theadvance of thetop heading. To further in-crease the speedof tunnel driving,particularly atthe top heading,and to recom-pense the crewsfor their extraeffort, a bonussystem was made effective on March 26thlast. For the two headings mucked byhand, Nos. 3 and 4, the bonus crew con-sisted of eleven miners, fifteen muckersand two shift bosses. In headings where apower shovel was used the bonus crewconsisted of twelve miners, eight muckersand two shift bosses. The bonus was paid bi-monthly on thebasis of ten per cent of each mans pay foreach average foot of progress in excess ofthe base rate, eleven feet per day being re-quired where a shovel was used and tenfeet where all mucking was done by hand.For example, if .the average daily progressin one of the headings where a shovel wasused was fourteen feet in a bi-monthlyperiod, each mans bonus was 30 per centof his regular pay. A considerable sum in
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Steel frame of Pit 3 power house Clubhouse and dormitory at Pit 3 power house bonuses was paid during the eight and one-half months the plan was in effect. In the month of August the crews atheading No. 1 established a worlds recordin the driving of a large timbered tunnel,their advance for the month being six hun-dred feet. The high average speed main-tained made it possible to complete alldriving two months ahead of schedule.Toward the end of the driving four ofthe heading crews, Nos. 1 and 2 versusNos. 5 and 6, entered into an exciting con-test. Headings No. 1 and 2 were ninehundred feet apart on November 1, whileheadings No. 5 and 6 were eleven hundredfeet apart. As a result of unusual speed atheading No. 6 and misfortune in strikingwet ground by No. 1 crew, the contestended in favor of crews No. 5 and 6. Theyholed through at noon ofDecember 3, 41 ^^ hoursbefore their competitors.Not only was the tun-nel driven at high speed,bringing it to completiontwo months ahead of time,but it