Abandoned mines often have serious environmental issues (heavy metals in runoff, etc.) I believe that these funds are intended to clean them up. Therefore, about $640 million will be spent on studies, reports, seminars, and oversight committees, $9 million will be sent on "promising pilot technologies", $0.75 million in "evaluating" those technologies, $0.24 million in "fixing" those technologies, and about 10 grand for a couple of new pumps.
Oh, and I forgot, some of that money will have to go towards lobbying Congress for more money.