The IPNF intends to have an open mine adit closed by backfilling/culvert installation at a mine located on the St Joe Ranger District, of the IPNF. This mine presents a hazard to public health & safet... The IPNF intends to have an open mine adit closed by backfilling/culvert installation at a mine located on the St Joe Ranger District, of the IPNF. This mine presents a hazard to public health & safety as well as to wildlife and this adit closure is in the interest of the public. The adit needs to be closed with a combination grated pvc pipe/backfill type closure due to extremely unstable and hazardous conditions.