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Show 203 Energy April 2002 Dateline charts mining stages: (Continued from page 19B) The American Mining Congress is founded. Electrk: builds the first alternating current power plant in Fsmutylvama. 1906 - The transition from mulea or horses to trolley haulage out of minea begins in earnest 1911 Victor American Coal in Colorado becomes the first to use rock dust In an underground mine. 19tf-Th- e first breathing apparatus for mine rescue operations is used. . 1901-Gener- al -- ed 1917 The Nntinnal final Aunriwtinn t fmiiviwl in WnaKingtm, D.C. 1917-1- 8 - Coal days a mqjor role in the IISL war effort during World War I. 1920-Joh- n L. Lewis assumes the presidency of UMWA. 1927 - Mine Safety Appliances announces the development of a continuous methane recorder for coal operations. 1930 Molded protective helmets for miners are introduced. 1937 The shuttle car is invented by Joy Manufacturing. 1948 - The continuous miner is introduced in Fmnqrivania. 1950 The heavy electrical loads drawn by increasingly popular continuous miners result in a conversion from direct current to alternating current at coal mines. The rail industry virtually completes its switch from . 1955 d to diesel locomotives. 1960 - Modern longwall mining begins in the US. with the installation of supports in West Virginia. 1961 - Coal becomes the mqjor fuel used by electric utilities to generate electricity. 1971 - Coal surface mining output matrhaw underground production far the first time. 1973-7- 4 - Oil embargo by the Organization of Petroleum Exporting Countries (OPEC) focuses attention cm the energy crisis and results in increased demand for USicoaL 1990 - United States yearly ina1 prarliwtinn tnpfl pfH friTlkm tffllfl for the first time. -- -- -- -- coal-fire- self-advanci-ng Hiawatha crews prepare to enter portal for underground shift men us into a wtghl u W IS Sd V , - KS UV ' W V ik Carbon County Commlsstoners Tom Matthews, Bill 1 Krompel, Mike Milavich Carbon County ComMlsslonws working in partnership with the Energy Industry to provide access to economic and recreation opportunities for our citizens. |