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Q2 2013 Financial Results

103 North American Rig Count ■ Near-term increase expected, primarily due to coming out of Spring break-up ◉ Increased pad drilling Industry focusing more on well count and footage drilled 2,500 2,000 1,500 1,000 500 0 1Q11 2Q11 3Q11 4Q11 Source: Spears Drilling and Production Outlook – September 2013 1Q12 2Q12 3Q12 - 4Q12 1Q13 2Q13 3Q13 4Q13 1Q14 2Q14 3Q14 4Q14 CleanHarbor

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