Robert Kenneth Thompson

Celtic Mining Group Ltd. operates surface coal mining sites and a coal washery. The company was founded by Richard Walters on April 23, 2004 and is headquartered in Caerphilly, the United Kingdom.

G. Walters (Holdings) Ltd. is a British company that provides compliance-led, self-delivery based services in civil engineering, plant, and development sectors. The private company is based in the UK and has offices across the country. The company has diversified into new and emerging markets while maintaining a plant and civil engineering service at their core. The company operates and maintain the largest independently owned plant fleet in the UK, supported by their own dedicated operators and maintenance facilities. The company focuses on sustainability and have collaborative and capable projects in Highways and Transportation, Development, and Energy sectors.

Founded in 1994, Avalon Glen is a holding British company that provides open cast coal mining services. Part of Celtic Mining Operations Group Ltd., the company is based in Cardiff, UK.

Neath Port Talbot Recycling Ltd. was founded in 1998 and engages in the treatment and disposal of non-hazardous waste, as well as the recovery of sorted materials. The company is based in Swansea, UK and is ultimately controlled by the Neath Port Talbot County Borough Council.

Coed Darcy Ltd. is a British company that provides property investment services. The joint venture company is based in Cardiff, UK. The company was founded in 1957.