That last link didn't work for some reason. Here's that information from Business Week on Mr Sheriff's credentials.
Mr. William Morris Sheriff, Bill, BSc. (Geology), MSc. serves as the Chief Executive Officer of Golden Predator Corp. Mr. Sheriff serves as the Chairman of the Board and Chief Executive Officer of Golden Predator Royalty & Development Corp. Mr. Sheriff has been Chief Executive Officer of Redtail Metals Corp., since 25 October 2012. He serves as an Advisor of Eurasian Minerals Inc. He has been Adviser of EMC Metals Corp., since July 2010. Mr. Sheriff served as the Chief Executive Officer of Americas Bullion Royalty Corp. since January 26, 2009. Mr. Sheriff served as an Interim Chief Executive Officer of Silver Predator Corp. from May 2011 to February 28, 2012. He has over 25 years of mineral industry experience as a geologist with an established reputation as a successful independent prospect developer. He served as Vice-President of Corporate Development for Energy Metals Corp. and its Executive Vice President from April 2006 to August 2007. He served as the Chief Executive Officer and Interim President of EMC Metals Corp. from April 2010 to May 2010. He served as Chief Financial Officer and Secretary of Tigris Uranium Corp. from October 30, 2009 to August 31, 2010. He served as Chief Executive Officer of Tigris Uranium Corp. from October 30, 2009 to September 21, 2010 and served as its President from October 30, 2009 to June 2010. He served as the Chief Executive Officer of EMC Metals Corp. from July 2006 to March 2009 and also served as its President from July 2006 to August 15, 2008. He served as the President of Platoro Investments Inc. from April 1985 to April 2006. He served as President of Pacific Intermountain Gold Corporation since 2002. He served as the Vice President of Advanced Project Development for Quincy Energy Corp. since March 15, 2004. Mr. Sheriff served as the Director of Corporate Development at Energy Metals Corp. which he co-founded in November 22, 2006. He served as the President of Energy Metals Corporation (US). From 1981 to 1984, he served as Research Geologist for Amselco Exploration where he had been responsible for prospect generation for the southwest USA. He began his career with Cyprus Minerals-AMOCO in 1980, working on molybdenum deposits in Montana. He has been Non Executive Chairman of Copper Ridge Explorations, Inc., since September 2009. Mr. Sheriff serves as the Chairman of the Board of Americas Bullion Royalty Corp. He serves as Chairman of Platoro West Holdings, Inc. and Executive Chairman of Tigris Uranium Corp. since September 21, 2010. Mr. Sheriff served as the Chairman of Starcore International Mines Ltd., from May 2009 to March 2010. He served as the Chairman of EMC Metals Corp. from March 18, 2009 to April 2010. He also served as the Non Executive Chairman of Redtail Metals Corp. from September 4, 2009 to October 31, 2011. He served as the Chairman of Energy Metals Corp. since November 22, 2006. He served as the Chairman of the Board of Directors at American Consolidated Minerals Corp. from June 5, 2009 to April 15, 2010. He has been a Director of Gold Standard Royalty Corporation since June 11, 2007 and Western Lithium USA Corporation since January 29, 2008. Mr. Sheriff has been a Director of Pan-Nevada Gold Corp. since October 2003. He has been a Director of Golden Predator Corp. since January 26, 2009 and Silver Predator Corp. since May 16, 2006. He Has been an Non Independent Director of Redtail Metals Corp. since 4 September, 2009. Mr. Sheriff has been a Director of Quincy Energy Corp. since April 6, 2005. He has been a Director of Americas Bullion Royalty Corp. since January 26, 2009. He has been Director of Copper Ridge Explorations, Inc., since September 2009. He has been Director of Tigris Uranium Corp. since October 30, 2009. He serves as Director of Wolfpack Gold Corp. He has been a Member of Advisory Board of Redtail Metals Corp. since October 31, 2011. He served as Director of Artha Resources Corporation from January 28, 2008 to April 6, 2010. He served as Director of Energy Metals Corp. since March 1, 2005. He served as a Director of EMC Metals Corp. from July 17, 2006 to July 2010. He served as Director of American Consolidated Minerals Corp. from June 5, 2009 to April 15, 2010 He served as Director of Midway Gold Corp. from April 13, 2007 to October 2008. Mr. Sheriff served as Director of Argus Metals Corp. from February 13, 2008 to January 2009, Eurasian Minerals Inc. since October 23, 2006, Evolving Gold Corporation (formerly, 6109527 Canada Ltd.) from September 2008 to April 30, 2009 and Uranium One Inc., from August 2007 to November 5, 2008. Mr. Sheriff holds a BSc. in Geology from Fort Lewis College in 1981 and conducted graduate studies at University of Texas-El Paso in Mining Geology and Mineral Economics.