List of Mines 1918

Owner	Name of Mine	Situation	Manager	Under-manager	Below	Above
Tawe Vale Collieries Co. Ltd., 2, Cambrian Place, Swansea	Old Primrose Pit	Rhos, Pontardawe		Ed. Evans	29	10
Taylor's Navigation Steam Coal Co., Pontypridd	Natgarw	Taffswell	WH Davies		251	68
Thomas Merthy Colliery Co. Ltd., Abercanaid, Merthyr	Llewellyn Merthyr (Level)	Merthyr	T Morris	W Hy. Thomas	83	14
ditto	Trebeddau (Level)	ditto	ditto	ditto	3	1
ditto	Lady Thomas (Level)	Abercanaid	ditto	R Jones	47	4
ditto	Waun Wyllt and Gorllwyn (Levels)	ditto	ditto	ditto	117	20
Oliver H Thomas, Field Vein Level, Llangonoyd	Field Vein Level, Gellihir	ditto			22	4
Saml. Thomas, Loughor	Broadbank	Loughor	GW Knoyle	David Davies	117	32
Tirdonkin Collieries Ltd., Pe,broke Buildings, Swansea	Tirdonkin	Llangyfelach	D Howell	A Davies	282	80
Ton Phillip Rhondda Colliery Co. Ltd.,Commercial Buildings, Port Talbot	Ton Phillip Nos.1,2&3 (Slants) Tytalwyn (Slant)	Cefn Cribbwr, Bridgend ditto	J Hillary ditto	T Watkins R Williams	675	92
Tonhir Colliery Co. Ltd., Bryn, Port Talbot	Bryn Merchantile (Slant)	Bryn	H Walters		35	5
ditto	Tonhir (Slant)	Bryn, Port Talbot	ditto		97	21
Trebanog Coal Co., Porth	Trebanog (Level)	Porth	E Johnson		24	8
Trefach Colliery Co. per. Ed. T David, Penhurst, porthcawl	Tynycoed (Slant)	Aberkenfig			2	-
Troedyrhiw Coal Co., 11&12 Mount Stuart Sq., Cardiff	ynysfaio Nos.1&2	Treherbert	WA Morgans	Wm. Griffiths	236	112
ditto	ditto Nos.3&4	ditto	ditto	David Owen G Maurice	794	73
Tyle Penlan Colliery Co., Cwmllynfell	Tyle Penlan (Slant)	Cwmllynfell			6	-
Tynygraig Colliery Co. Ltd., Bryncynon, Pontrhydyfen, Port Talbot	Tynygraig (Level)	Glynogwr		JE Jenkins	29	9
United National Collieries Ltd., 20, Exchange Buildings, Cardiff	Bute, Lady Margaret and Gorllwyn Level	Treherbert	W Pirie	E Henry	665	136
ditto	National Nos.1&2	Wattstown	Rees Morgans	John Evans	933	171
ditto	Tylacoch	Treorchy	A Williams	E Evans	-	15
ditto	Ynyshir Nos.1&2	Ynyshir	E Bevan	G Goldsworthy J Evans R Weed	965	142
George Vile, 14, Commercial St., Aberbargoed	Duffryn	Gelligaer			6	3
Vivian and Sons, Havod, Swansea	Mynydd Newydd	Swansea	Thos Mort		277	116
TW Watkins, 18 Margaret St., Gilfach, Bargoed	Union (Level)	Gilfach Bargoed			7	2
Welsh Navigation Steam Coal Co. Ltd., 12, Bute Crescent, Cardiff	Coedely	Tonyrefail	S Davies	G Evans	1226	224
ditto	Tylach Fach (Level)	ditto	ditto	W Joseph	309	13
Williams, Grundy and Crews, 47, Mill Rd., Caerphilly	Wernddu (Drift)				2	2
Wernddu Railway & Colliery Co. Ltd., Alltwen, Pontardwe	New Wernddu (Slant)	Alltwen	T Mayberry	D Sims	140	34
Werfa Dare Colliery Co. Ltd., Werfa Graig Colliery, Aberdare	Werfa Graig (Level)	Abernat	O Hawkins	E Jones	123	42
Wernganol Colliery Co. Ltd., Bryngwyn Place, Pontypool	Wern Fforest (Level)	Nelson	EP Jones		17	5
John Williams and Co., 1, Bridge Row, Dunvant, Swansea	Voylart (Level)	Dunvant	Idle 1918		-	-
Owen Williams, Crossways, Cowbridge	Pwllgwaun	Pontypridd	DP Thomas		10	4
Thomas Williams & Sons, Llangennech Ltd., Llangennech	Grovesend	Pontardulais	J Benynon	Dd. Mainwaring	210	35
ditto	Brynlliw	ditto	ditto	ditto	89	46
RP Williams, 11, Wood St., Gilfach Goch	Craig las (Level)	Hendreforgan			9	1
W Cyrlas Williams 38, Mary St., Porthcawl	Braichycymmer (Level)	Pontycymmer			27	-
Windsor Steam Coal Co. (1901) Ltd., 3, Bute Crest., Cardiff	Windsor	Abertridwr	G Morgan	WB Llewellyn TV Williams	1629	294
Ynisarwed Collieries Co., Resolven, Neath	Glyn-Mertyr (Slant)	Resolven	D Griffiths	FT Reynolds	215	17
ditto	Ynisarwed (Level)	ditto	ditto	W Morgan	201	50
ditto	ditto Lower (Slant)	ditto	ditto		200	9
Ynisgynon Collieries ltd., 8, Princess St., London	Ynisgynon (Slant)	Ystalyfera	Thos. Ritchie		39	23
Ynyslos Colliery Co. Ltd., St. Oswald Chambers, Port Talbot	Ynysavon (Level)	Cwmavon	W Rees		51	9