National Exploration Wells and Pumps (EWP) drills a reverse circulation well at 45 degrees to a depth of 200 feet using a Schramm T685WS. A small producer called US Gold hired National EWP to drill exploration holes for future production work at the Tonkin gold project, about one hour from Eureka, Nev. National EWP has about 12 Schramm rigs, ranging from the T450GT to T200XD.   ND