Coordinates: 51°43′04″N 4°14′16″W / 51.7178°N 4.2379°W / 51.7178; -4.2379
Trimsaran is a community and former mining village which lies on the B4308 between Llanelli and Kidwelly, in the Welsh county of Carmarthenshire.
Trimsaran is six miles (10 km) from Llanelli, and 13 miles (21 km) from Carmarthen. It is close to Burry Port harbour, Pembrey Country Park and the Millennium Coastal Park.
The community is bordered by the communities of: Llangyndeyrn; Llanelli Rural; Pembrey and Burry Port Town; and Kidwelly, all being in Carmarthenshire.
There are historical reports of mining activities taking place in the Trimsaran area dating back hundreds of years. By 1896, the Inspector of Mines noted that Trimsaran employed 144 men, producing coal, anthracite, and fireclay.
By the early 1900s, three drift mines made up Trimsaran colliery: Caedean (deepest), Waunhir and the Upper slant; all connected underground and on the surface by a tramway. By 1908, Waunhir and Cadean employed 198 men, while by 1918 the workforce had grown to 435. By 1923 352 men employed at Caedean Slant, Upper Slant employed 63 men and Waunhir 126 men.