During all the years of Imodium/opiate usage, her liver became severely compromised and she developed Breast Cancer (cancer virtually never develops in a person with a healthy liver). She beat a small breast tumor once with hyperbaric oxygen, but it returned (because no one addressed her constipated bowels/liver).
-- Wikipedia. Reverse engineering, also called back engineering, is the processes of extracting knowledge or design information from anything man-made and re-producing it or re-producing anything based on the extracted information.
A geological engineer searches for mineral deposits and performs site evaluations. They devise ways to extract the minerals or metals in efficient and environmentally safe ways. A mining engineer would typically be more specialized in one kind of metal or mineral, like gold or coal.