; exclusions (1) Deadline Not later than 90 days after the date on which the eligible land is jointly selected under subsection (c), the Secretary shall offer for sale or exchange the parcels of eligible land jointly selected under that subsection. (2) Postponement or exclusion The Secretary or the County may postpone, or exclude from, a sale or exchange of all or a portion of the eligible land jointly selected under subsection (c) for emergency ecological or safety reasons. (h) Withdrawal (1) In general Subject to valid existing rights and mining claims, millsites, and tunnel sites, effective on the date on which a parcel of eligible land is jointly selected under subsection (c) for sale or exchange, that parcel is withdrawn from— (A) all forms of entry and appropriation under the public land laws, including the mining laws; (B) location, entry, and patent under the mining laws; and (C) operation of the mineral leasing and geothermal leasing laws. (2) Termination The withdrawal of a parcel of eligible land under paragraph (1) shall terminate— (A) on the date of sale or, in the case of exchange, the conveyance of title of the parcel of eligible land under this section