Dear Mr. Allardice,
Thank you for posting your request on History Hub!
We suggest that you consult the USGS Mineral Resources Data Systems map by Commodity, select for “gold” and use the key to narrow down the results to the type of mine. Clicking on the site symbol will open another page which will contain the Mine ownership information. We also suggest that you visit the USGS site, Gold Statistics and Information, for more resources and a contact for the USGS Mineral Commodity Specialist.
We hope this is helpful. Best of luck with your research!