At 38,000 square feet in size, they produced average weekly sales of $564,000 translating to sales per square foot of $777, and generated a contribution margin of approximately 6%. These outstanding results, combined with lower average capital investment and pre-opening expenses per store, are driving solid returns.
Drilling rigs commonly operate 24 hours per day, 7 days per week with either three crews working 8 hour shifts or two crews working 12 hour shifts. Most often day crews and night crews will alternate weekly so each crew has a chance to work during both the day and night.
oil rig. An oil rig is a structure on land or in the sea that is used when getting oil from the ground. oil rig. Example sentences containing 'oil rig'. They are watching mountains for climbers and seas for oil rigs. Wind farms and oil rigs pollute the sea with noise, so whales are having to raise their voices to be heard.