21.  To keep them, even at entry-level jobs, the drilling companies must pay them more than they did in the past.

22.  Today, tribes own drilling companies and negotiate exploration royalty payments with multinational companies.

23.  Top gainers included contract drilling companies.

24.  Two years ago, using revenue from gambling, the Utes purchased some gas fields, and started their own drilling company, Red Willow.

25.  Wilrig is an offshore oil and gas drilling company.

26.  Attacks against Shell and other drilling companies in other parts of the oil-rich Niger Delta have since become regular occurrences.

27.  He estimated that private drilling companies could keep as much as a third of potential tribe revenue if the companies had to pay for exploration and study upfront.

28.  Houston-based Shell is the most active deep-water drilling company in the Gulf of Mexico.

29.  The Israeli drilling company Isramco Inc. on Sunday reported natural gas flow from an offshore test drill near the southern town of Ashkelon.

30.  Those under questioning included five drilling company officials, five subway construction engineers and a dozen city gas officials.