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Ocean and United National Collieries Ltd

The successor to the Ocean Coal Co. Ltd recorded as owner of Maindy Colliery at Ton Pentre before nationalisation in 1947.

Mines operated

MineRegionYears
Maindy Colliery Rhondda Cynon Taf ?–1947

Record created: 1 October 2026 · Last researched: 1 October 2026

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