Randy Huffman, secretary of the state Department of Environmental Protection, is scheduled to deliver a report to lawmakers Tuesday on his agency’s investigation of whether coal slurry that’s injected into underground mines is getting into drinking water and making people sick.

But as we learned this weekend from Associated Press writer Vicki Smith, DEP hasn’t really been able to figure out the answer to the question asked by lawmakers and coalfield residents.

But Huffman is going to present at least some sort of updated report to the Legislative Water Resources Committee during a meeting at noon Tuesday in the HouseJudiciary Room (410M) of the state Capitol.