in earnest with the development of the steam engine in the late seventeen early eighteen hundreds hemans began to ma and extract fossil carbon from the earth's crust coal oil natural gas even in the absence of humans over some time period it would be uplifted and subject to erosion and remove what would return to the atmosphere but those rates are tiny compared to the ability of humans to go out with large machines to deliver a large quantities of this material to the surface of the earth where it is burned and in the useful generation of energy. we have larger quitman that was introduced on surface mines about twenty five years ago here in washington which accounted for the ability to recover coal seams that heretofore been monocle the use of dragline skylab all that mining seems that were an economic. and even physically impossible. without the use of that. many people twenty five years ago when the first company said that even buying a brag land they were laughed at and they said there's no way in the world you can you get a piece would put like that on the narrow ridgers of southern