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The early Blaen-Clydach Colliery (top) & the two levels of Cwm-Clydach Colliery.
Blaen-Clydach opened in early 1860's by Frank James working No.3 Rhondda seam
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To Google these locations maps.google.com/maps/ms?client=firefox-a&hl=en&ie...
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Map by Thomas Brothers Maps. Actual publication date likely earlier - 1955 is stamped on the card stock cover, but the date code on the map is smudged.
Sinking commenced 1864 by David Davies & completed 1866 to the Six Feet seam.
The coaling shaft was oblong 16ft x 12ft and ventilation was by two furnaces which consumed 24 tons of coal per day. The seams worked at this time were at 220yds and 270yds depth.
A report of July 1891 stated :-
"Two shafts are 44 yds. apart, the downcast is oval 17' x 15'; upcast is 15' x 13' oval both cased throughout with bricks, depth 254 yds. to the Six Feet seam ( a report of 1898 states the downcast was lined in Pennant stone). Winding engine has 2 x 28" cylinders with 5ft. stroke and 12ft. dia. drums for flat ropes. One tram raised in each cage with output per week of 6,500 tons. Five hauling engines in operation underground driven by steam supplied by two underground boilers17' x 5' dia.. Ventilation is by two furnaces at the bottom of the upcast. Surface boilers are two Lancashires 30' x 6' dia., + 3 No. 29' x 5'-4" and 2 x 21' x 5'-8" multitubular."
By 1898 ventilation was by means of a 45' dia. improved Waddle fan.
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Map by Thomas Brothers Maps. Published for Union 76 gas stations, as giveaway freebies. Someone has carefully written in and color coded schools and churches.
Map by Rand McNally. Map is glued to the inside back cover of a hundred+ page dictionary-style street guide of Oakland, Alameda, Berkeley, Richmond, Piedmont, and San Leandro.
Map by Thomas Brothers Maps. July, 1956 update of an older map. The rare full-color folded Thomas Brothers map, at least until the 1980s. This shows part of the UC Berkeley campus area, Shattuck Square, and some other municipal buildings.
Map by The Chadwick Guide, folding out from the inside rear cover of a dictionary-style street guide. I love San Fran - I think it's definitely among the world's greatest cities, so I have a lot of SF maps in my collection.
The theatre of the empire of Great-Britain : presenting an exact geography of the Kingdom of England, Scotland, Ireland, and the isles adjoyning, with a chronology of the civil wars in England, Wales and Ireland.
Printed London 1676
Printer (for) Thomas Bassett
NLA RBf 910.9 SPE
The new Blaen-Clydach Colliery (top) & Nant Rhondda Colliery (arrowed)
This later Blaen-Clydach Colliery opened by Bush & Co. 1875 and closed 1947. This mine was also known as "Brookvale"
Nant-Rhondda drift commenced c1910 and was also known as the "Gorki"
To Google this location maps.google.com/maps/ms?client=firefox-a&hl=en&ie...
Map by Dolph Map Co, published for a local magazine distributor. Map opens out from a card stock cover, and includes Indiana towns across the Ohio River. A large map of Jefferson County is included on the reverse side.