High resolution helicopter-borne magnetic and electromagnetic survey Eureka Graben area, Colorado September 1999
On September 25, 1998, SIAL Geosciences Inc. (SIAL) was awarded Department of Interior, contract 98CRCN1018, by the U.S. Geological Survey.  This contract required SIAL to carry out a high-sensitivity magnetic and electromagnetic helicopter survey over one block located in the Eureka Graben Area.  The primary goal of …