31. Stands are emplaced on the floor of the drilling rig by the chain hand. 32. An example of this is erecting the mast of a large mobile drilling rig . 33. The offshore drilling rig contractor's stock gained on the backdrop of rising oil prices. 34. Oil drilling rigs are in short supply and building new rigs is very expensive. 35. GSP has an investment plan for modernization of onboard equipment of the drilling rigs . 36. The strike lasted nearly four months, on oil development drilling rigs and production ships. 37. The transportation company, which has 42 trucks, specializes in hauling drilling rigs and pipe. 38. Rates for drilling rigs have begun to fall as smaller companies have cut back. 39. Day rates are the rents companies charge oil exploration equipment such as drilling rigs . 40. Recently, offshore drilling rigs have closed-in tanks for safety.
