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.
Best Answer: It has to do with supply and demand. It has to do with what they have learned which makes them faster to train in what they really need to know. Like all engineers they work the hours they need to to get the job done. That can range from 8 hours a day for 5 days to 12 or 14 hours a day 7 days a week. Because the oil companies that hire them, are depending on their know how to produce oil. It would cost the companies a lot of money, and time if the engineers just make a guess. They work anywhere form 8 to 16 hours a day (or more), depending on what their doing.