Home › CFR › Title 30 › Part 81930 CFR Part 819 — Special Permanent Program Performance Standards-Auger Mining§ 819.1— Scope.§ 819.11— Auger mining: General.§ 819.13— Auger mining: Coal recovery.§ 819.15— Auger mining: Hydrologic balance.§ 819.17— Auger mining: Subsidence protection.§ 819.19— Auger mining: Backfilling and grading.§ 819.21— Auger mining: Protection of underground mining.