30 + years ago, Exxon’s approach to getting oil out of shale was to drill and blast, crush the shale down to golf balls and then hit the chunks with radiation to make the oil come out. In this process, the golf balls because bigger than soft balls, (about 40 percent bigger.) Add this impact to the normal 25 percent swell factor and you begin to see the problem.
Yes and Jimmuh Cahtuh's "Synfuels Corporation" spent billions of taxpayer dollars to find this out. Fortunately we have a new cadre of liberal political dipshits to make sure we repeat other old mistakes instead.