30Mineral Resources12011-07-012011-07-01falseTemporary notations, revisions, and supplements.75.1202Section 75.1202Mineral ResourcesMINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABORCOAL MINE SAFETY AND HEALTHMANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINESMapsยง 75.1202Temporary notations, revisions, and supplements.[Statutory Provisions]
Such map shall be kept up-to-date by temporary notations and such map shall be revised and supplemented at intervals prescribed by the Secretary on the basis of a survey made or certified by such engineer or surveyor.