Most coal mining in Appalachia is now done by surface mining, with some of it being done by "mountaintop removal" or "mountain-topping." Which is NOT true regarding this type of mining? Group of answer choices it is highly controversial because of the ecological impacts it is safer than the older-style shaft mining because there is no risk of cave-ins it is highly controversial because of the aesthetic impacts it requires more workers because so many different machines do the work it is safer than the older-style shaft mining because there is no risk of getting "black lung