to drive a borehole
31Mining in the Upper Harz — The headframe of the Emperor William Shaft in Clausthal is one of the oldest surviving winding towers in Germany …
32Frank Whittle — Infobox Person name = Frank Whittle image size = 300px caption = birth name = birth date = birth date|1907|6|1|df=y birth place = Earlsdon, Coventry, England. death date = death date and age|1996|8|9|1907|6|1|df=y death place = Columbia, Maryland …
33Tunnel — This article is about underground passages. For other uses, see Tunnel (disambiguation). Underground tunnel for heatpipes between Rigshospitalet and Amagerværket in Denmark …
34Edwin Drake — Edwin Laurentine Drake Born March 29, 1819(1819 03 29) Greenville, New York Died November 9, 1880(1880 11 09) …
351979 energy crisis — Further information: 1979 world oil market chronology 1979 oil crisis Graph of Top Oil Producing Counties, showing drop in Iran s Production [1] …
362000s energy crisis — This article is about the causes and analysis of the relatively high oil prices of the 2000s. For discussion of the effects of the crisis, see Effects of the 2000s energy crisis. For a chronology of oil prices during this time, see 2003 to 2011… …
37Serekunda (Ortsteil) — Serekunda ist ein Ortsteil der Gemeinde Kanifing (englisch Kanifing Municipal) im westafrikanischen Staat Gambia. Der Ortsteil liegt im Zentrum der Gemeinde und gehört zum gleichnamigen Ort Serekunda. Bei der Volkszählung von 1993 wurde… …
38Earthquake — For other uses, see Earthquake (disambiguation). Global earthquake epicenters, 1963–1998 …
39Geyser — For other uses, see Geyser (disambiguation). Strokkur geyser, Iceland …
40Han Dynasty — 漢朝 ← 206 BCE–220 CE …
