CHATHAM ISLANDS: Imported 30/4 -- Glen
OSM Page: http://wiki.openstreetmap.org/wiki/Tag:landuse%3Dquarry, see also http://wiki.openstreetmap.org/wiki/Key:resource
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HB 31 Aug 2012: updated to new field names. looks ok to me.
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see also discussion in the gravel_pit_ploy and pumice_pit_poly layers.