In producing petroleum from oil shale, approximately 1.5 metric tons of shale should be processed to produce one barrel of oil (140 kg). Determine the mass and volume of spent oil shale resulting in the production of one million barrels of oil. Take the density of the loosely dumped spent shale to be 1.2 metric tons per cubic meter. What would be the volume produced in one year for the production rate of one MBD? Assuming that the spent shale is uniformly distributed with a height of 100 m, determine the land area needed to dispose of one year's waste.