	Wilson, D., Davies, J. R., Fletcher, C. J. N., Smith, M. (1990) Geology of the South Wales Coalfield. Part VI. The Country around Bridgend. Memoirs of the Geological Survey of Great Britain Vol. 6 (2nd ed.) British Geological Survey	Report (edition)
	mudstones Formation Limestone Arundian a omen DISTRICT 125-360 Dinantian \| Brigantian \| Carboniferous...Bridgend This memoir describes the geology of the district around ~ Bridgend, largely situated to the south...which are preserved in the north and east of the district, are also described, together with those developed...the tectonic evolution and mineralisation of the district is included, together with an economic geology...Other publications of the Survey dealing with this district and adjoining districts are given in Appendix
	Strahan, Aubrey, Tiddeman, R. H., Gibson, Walcot, Cantrill, T. C. (1917) Memoirs of the Geological Survey, The Geology of the South Wales Coal-Field. Part IV - The Country around Pontypridd and Maes-Teg (2nd ed.)	Report (edition)
	sole Wholesale .Agent to the Trade outside the County of London. 1917 Price Three Skillings and Sizpence...detail 1n view 0£ its importance in connection with mining. Tl1e course of the Pontypricld anticline and the...ble a.ssistance rendered by Colliery Managers, Mining Engineers and Surveyors. J. J. H. TEALL, Director...information, more especially with. relation to the mining- dev•elopments which have taken place since the...the Coed-Ely Colliery in the Ely Valley .. In the Ogwr Valley, and especially in the A van Valley and its
	Woodland, Austin W., Evans, W. B. (1964) Memoirs of the Geological Survey of Great Britain Vol. 4, Geology of the South Wales Coalfield. Part IV. The Country around Pontypridd and Maesteg (3rd ed.) Institute of Geological Sciences	Report (edition)
	Maesteg (l'v1ei11. Gef>!. S11rr.) RHONDDA FACH VALLEY LOOKING SOUTH-SOUTH-EAST !-ROM BLAE -LLECHAU PLATE...detail in view of its importance in connection with mining. The course of the Pontypridd anticline and the...valuable assistance rendered by Colliery Managers, Mining Engineers and Surveyors .. J. J. H. TEALL Director...information, more especially with re1ation to the mining developments which have taken place since the publication...the Coed-Ely Colliery in the Ely Valley. In the Ogwr Valley, and especially in the Avan Valley and its
	Strahan, Aubrey, Tiddeman, R. H., Gibson, Walcot (1903) Memoirs of the Geological Survey, The Geology of the South Wales Coal-Field. Part IV - The Country around Pontypridd and Maes-Teg (1st ed.)	Report (edition)
	Cy-11,01i Valley ; (tJ) 1.'he Rho·ndcla-facli 1 ,,1, lle11 ; (4) The Rlio,,illda:faio,· Valley ; (fi) 'l'lie...;1-1t Valley ; ( tJ) The f'ale of :A�eatli ; ('i') (iell-i 'tv·ion to the Ogw1·-.facli Valley ; (8)...'he lllio,n clcl{i Valleys ; 1·he Or111Tr (t'11,el Ely Vftlle�lJ� / 1�/1,e Ga·i�o a11ll Ll//'>t# .,.f <1...The Taff, the Cynon which occupies the Aberdare Valley, the Ogmore) Rl1ondda the Fa,vr, (or El Rhondda...mile to ii 1nile i11 ,vidth i11 tl1e Og111 01·e Valley, but disappears t1ndcr late1· cle1)osits at Kenfig

Galena from Ely Valley mines, Pioche Mining District, Lincoln County, Nevada, USA

Galena from
Ely Valley mines, Pioche Mining District, Lincoln County, Nevada, USA