Drilling regulators hear from critics at meeting - Article Photos 1/4

Matthew Lepore, right, Director of the Oil & Gas Conservation Commission and Jim Milne, Environmental Manager, testify on ground water issues at a meeting of the Colorado Oil and Gas Conservation Commission in Denver on Wednesday, Nov. 14, 2012. Groundwater tests could help show whether water has or hasn't been contaminated by drilling. (AP Photo/Ed Andrieski)