The DUCHESS WEST 7 Mine map was published at 2 Miles to an Inch as part of the SPECIALS-2MILES (GOLD,MINERAL,COAL FIELD SHEET) series to administer permit and permit related spatial information. The
The BRIEN CREEK Mine map was published in 1986, charted in 1986 at 1:25 000 as part of the 1:25 000 series to administer permit and permit related spatial information. The map was maintained internal
