호주
GSQOpenData@dnrme.qld.gov.au - Helidon 40 Chains To An Inch Mine Map Provisional 1965
URL: https://geoscience.data.qld.gov.au/dataset/mr007605 The HELIDON Mine map was published in 1965, charted in 1970 at 40 Chains to an Inch as part of the PARISH series to administer permit and permit related spatial information. The map was maintained internally as a provisional office chart and is located within the (9342, 9343) 1:100 000 map areas. The map product is available to all government agencies, industry and the public for reference. Title and Image reference number is HELIDON_1567. Cancelled 1972