BS ISO 20305:2020 pdf free.Mine closure and reclamation一Vocabulary. BS ISO 20305 3.1.1 abandoned derelict orphan legacy mine mine or mine feature (3.4) that has not been formally relinquished (3.1.3) and for which the responsibility for mine closure (3.3.2) cannot be allocated to an individual or organization Note 1 to entry: Liability for an abandoned mine can fall to the landowner...