PART 717 — UNDERGROUND MINING GENERAL PERFORMANCE STANDARDS [ 30 CFR 717]PART717 — UNDERGROUND MINING GENERAL PERFORMANCE STANDARDS [ 30CFR 717 ]Table of Contents§ 717.10 — Information collection.[ Last FR update: 08/23/1994 ]§ 717.11 — General obligations.§ 717.12 — Signs and markers.§ 717.13 — [Reserved]§ 717.14 — Backfilling and grading of roadcuts, mine entry area cuts, and other surface work areas.§ 717.15 — Disposal of excess rock and earthmaterials on surface areas.§ 717.16 — [Reserved]§ 717.17 — Protection of the hydrologicsystem.[ Last FR update:12/31/1979 ]§ 717.18 — Dams constructed of or impoundingwaste material.§ 717.19 — [Reserved]§ 717.20 — Topsoil handling andrevegetation.Authority: Secs. 201 and 501, Pub. L. 95–87, 91 Stat. 445 (30U.S.C. 1201).Source: 42FR 62695, Dec. 13, 1977, unless otherwise noted.§ 717.10 Information collection.The Office of Management and Budget has determined thatthe information co...