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- Plas Machynlleth Estate (Wales) -- Archives, 1 results
- Van Mines -- Records and correspondence, 1 results
- Llanidloes Mining and Machinery Co. Ltd. -- Records and correspondence., 1 results
- Welsh Van Mining Co. Ltd. -- Records and correspondence., 1 results
- Nantiago Mine Ltd. -- Records and correspondence., 1 results
- Van Mines, 1 results
- Llanidloes Mining and Machinery Co. Ltd., 1 results
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- Plas Machynlleth Estate (Wales), 1 results