DISA - http://www.disa.com/
PEC Premier - http://www.psmindex.com/
Veriforce - http://www.veriforce.com/default.aspx
PAW - http://www.pawyo.org/
NDPC(North Dakota Petroleum Council) - http://www.ndoil.org/
MPA(Montana Petroleum Association ) - http://www.montanapetroleum.org/index.php?pr=About_Us
COGA(Colorado Oil & Gas Commission) - http://www.coga.org/mc/page.do
IADC - http://www.iadc.org/
NDSC(North Dakota Safety Council) - http://www.ndsc.org/default.aspx
SPE(Society of Petroleum Engineers) - http://www.spe.org/