Oil Refining
An important new industry, oil refining, grew after the Civil War. Crude oil, or petroleum -- a dark, thick ooze from the earth -- had been known for hundreds of years, but little use had ever been made of it. In the 1850s Samuel M. Kier, a manufacturer in western Pennsylvania, began collecting the oil from local seepages and refining it into kerosene. Refining, like smelting, is a process of removing impurities from a raw material. Kerosene was used to light lamps. It was a cheap substitute for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of petroleum. The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture seemed so impractical and foolish that onlookers called it Drakes Folly. But when he had drilled down about 70 feet , Drake struck oil. His well began to yield 20 barrels of crude oil a day. News of Drakes success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for black gold all over western Pennsylvania. The boom rivaled the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush. Crude oil could be refined into many products. For some years kerosene continued to be the principal one. It was sold in grocery stores and door-to-door. In the 1880s refiners learned how to make other petroleum products such as waxes and lubricating oils. Petroleum was not then used to make gasoline or heating oil.
国际英语资讯:U.S. lawmakers self-quarantine after exposure to COVID-19 patients
国内英语资讯:Shandong, Xinjiang lower coronavirus emergency response
体坛英语资讯:FA Cup fourth round offers the chance for glory and disaster
新冠病毒演化出两个亚型
运营商要为疫情防控期间宽带网络教学提供资费优惠
The Meaning of Womens Day 妇女节的意义
体坛英语资讯:Maradona says he turned down offer to coach Venezuela
如何战胜抑郁
老外爱逛北京菜市场
国际英语资讯:Indian PM holds review meeting on COVID-19 situation with 3 new cases reported
国内英语资讯:Commentary: Close cooperation only way to beat COVID-19
美前总统吉米·卡特认为自己受到监控
鸭鸭虽然暂时不能去灭蝗了,但这些生物的确是生物防治的功臣
体坛英语资讯:Mestalla to put Setiens pasting game to the test
体坛英语资讯:Beijing 2022 mascots meet fans in Olympic Museum, as Bach extends Chinese New year greetings
体坛英语资讯:Juve knock out Roma 3-1 to reach Coppa Italia semis
WHO:2017年全球700万人死于空气污染
国内英语资讯:1,297 recovered COVID-19 patients discharged on Chinese mainland
国际英语资讯:Egypt, Sudan vow to boost mutual relations
中国商家推出“无接触”销售 降低疫情影响
国内英语资讯:Vice premier stresses community-level epidemic prevention, control
11月再见!007新片受疫情影响将推迟上映
英国禁止向18岁以下的未成年人出售电子烟
国际英语资讯:Coronavirus cases rise in Europe as WHO says figure outside China hit 20,000
国内英语资讯:China regulates online study amid epidemic
体坛英语资讯:Ex-Colombia midfielder Viafara extradited to United States
国际英语资讯:New York governor declares state of emergency as COVID-19 cases soar to 76 statewide
联合国性别研究报告:90%的人对女性有歧视
国内英语资讯:Xi Focus: Xi extends solicitude to females fighting epidemic on Intl Womens Day
体坛英语资讯:Roundup: Wang stuns Williams, Osaka out on day 5 of Australian Open
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |