Refractory metals

#	Item
421	PDF Document Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2004-09-14 10:23:51 Refractory metals Transition metals Oxide minerals Tantalum Niobium Coltan Cabot Corporation Pyrochlore Ore Chemistry Matter Chemical elements
422	PDF Document Add to Reading List Source URL: minerals.usgs.gov Language: English - Date: 2007-01-17 10:51:51 Transition metals Refractory metals Niobium Tantalum Coltan Ferroalloy Steel Nickel Superalloy Chemistry Matter Chemical elements
423	PDF Document Add to Reading List Source URL: konzern.heraeus.de Language: English - Date: 2013-08-30 05:11:30 Refractory metals Transition metals Particle accelerators Niobium Heraeus DESY Tantalum Superconductivity Resonator Physics Matter Chemical elements
424	PDF Document Add to Reading List Source URL: stellite.com Language: English - Date: 2009-02-06 14:38:20 Chemical elements Transition metals Stellite Materials science Refractory metals Cobalt Gas tungsten arc welding Welding Submerged arc welding Chemistry Matter Arc welding