depth of mining
51Russia — /rush euh/, n. 1. Also called Russian Empire. Russian, Rossiya. a former empire in E Europe and N and W Asia: overthrown by the Russian Revolution 1917. Cap.: St. Petersburg (1703 1917). 2. See Union of Soviet Socialist Republics. 3. See Russian… …
52Erhardt v. Boaro, (113 U.S. 527) — SCOTUSCase Litigants=Erhardt v. Boaro ArgueDate=January 14 ArgueYear=1885 DecideDate=March 2 DecideYear=1885 FullName=Erhardt v. Boaro USVol=113 USPage=527 Citation= Prior= Subsequent= Holding= SCOTUS=1882 1887 Majority= JoinMajority= LawsApplied …
53Congress Mine — The Congress Mine is a gold mine located next to Congress, Arizona on the southeastern slope of the Date Creek Mountains, approximately 18 miles north northeast of Wickenburg, Arizona at an elevation of about 3,000 feet (Lat. 34.216… …
54Earthquake — For other uses, see Earthquake (disambiguation). Global earthquake epicenters, 1963–1998 …
55Hydrothermal vent — Marine habitats White smokers emitting liquid carbon dioxide at the Champagne vent, Northwest Eifuku volcano, Marianas Trench Marine National Monument Littoral zone …
56Tailings — A panorama of Broken Hill, New South Wales, backed by the man made mullock (waste tailings) heaps from the Line of Lode mine (the mullock heaps are the hills that stretch across this image). Tailings, also called mine dumps, slimes, tails, leach… …
57Lake Balkhash — Not to be confused with Lake Baikal. Lake Balkhash Балқаш Көлі Озеро Балхаш View from Space, April 1991 Location Kazakhstan Coordinates …
58Fathom — unit of length m= 1.8288000 accuracy=5 A fathom is a unit of length in the Imperial system (and the derived U.S. customary units), used especially for measuring the depth of water. There are 2 yards (6 feet) in a fathom. Encyclopædia Britannica… …
59Magnetotellurics — Magnetotelluric station Magnetotellurics (MT) is an electromagnetic geophysical method of imaging the earth s subsurface by measuring natural variations of electrical and magnetic fields at the Earth s surface. Investigation depth ranges from… …
60cañada — /keuhn yah deuh, yad euh/, n. Chiefly Western U.S. 1. a dry riverbed. 2. a small, deep canyon. [1840 50; < Sp, equiv. to cañ(a) CANE + ada n. suffix] * * * Canada Introduction Canada Background: A land of vast distances and rich natural resources …
