Peter Sweeny, building on Robert Beart's earlier design, made a huge advancement in rotary drill technology, enabling almost continuous drilling. His new design also improved on hole cleaning. .
Charles Burleigh, John W. Brooks, and Stephen F. Gates patented a mechanical drill meant to be used on the Hoosac tunnel: the compressed air Burleigh drill. The tunnel spurred several innovations in drilling technology, including the earlier Couch/Fowle drill.. .
Edward A.L. Roberts was awarded a patent in November 1866 for what would become known as the Roberts Torpedo, a device for increasing. .
Until were developed in the late 19th century, the main method for drilling rock was muscle power of man or animal. The technique of oil drilling through or has its origins dating back to the ancient Chinese Han dynasty in 100 BC, where percussion drilling was used to extract natural gas in the Sichuan province. Early oil and gas drilli.
[pdf] HRG Group, Inc., formerly Harbinger Group Inc. and Zapata Corporation, was a based in , having originated from an company started by a group including future U.S. president. .
The company traced its origins to Zapata Petroleum Corporation, founded in 1953 by future U.S. President , along with his business partners John Overbey, , , and Thomas J.. .
Zapata sought to acquire a controlling interest in the in 1969, but was outbid by 's AMK Corp. Robert Gow's father, Ralph Gow, was on United Fruit's board of directors. In the 1970. .
By 1994, the company had come under Glazer's control, after a . Glazer became chairman of Zapata, replacing Ronald Lassiter, and in 1995 , son of Malcolm, was named CEO and president o.
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