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.
Employees on these rigs range from the well-educated engineers who develop tools and plan methodology to the roustabouts who do the dirty work that keeps the rig running smoothly. How much a worker in the oil extraction industry makes depends upon his job; even for untrained workers, the pay can be attractive.