From TFA "It seems obvious to say that happy developers will perform better than unhappy ones"
Then FTFA goes on and on explaining
The source of the parent quote above is the Bureau of Land Management federal website. Perhaps whoever authored your wikipedia article is making a distinction about the "Mineral Leasing Act of 1920" which is derivative of the GMA. Or perhaps Jack Abramoff's mignons have been editing your wiki. But again, this is from BLM.gov
http://www.blm.gov/wo/st/en/prog/energy/coal_and_non-energy.html "BLM has responsibility for coal leasing on approximately 570 million acres where the coal mineral estate is owned by the Federal Government. The surface estate of these lands could be controlled by BLM, the United States Forest Service, private land owners, state land owners, or other Federal agencies. BLM receives revenues on coal leasing at three points: 1) a bonus paid at the time BLM issues the lease an annual rental payment of $3.00 per acre or fraction thereof, 2) royalties paid on the value of the coal after it has been mined. The Department of the Interior and the state where the coal was mined share the revenues."
Again, the total fees collected (GMA 1872 and MLA 1920 combined) do not even cover the costs of staff at the Interior Department or BLM!
Anyone can make an omelet with eggs. The trick is to make one with none.