Limestone & Lime kiln
QUARRYING and LIME KILN OPERATION
Including Ironstone, Mumbles Marble and Geology 
NEW
by Ian Prothero
The hazardous journey down into Ginny's Gut, Langland Cliffs, leads to the forbidden depths of 'Doctor's Mine,' an iron mine, which extended up into the fields off Higher Lane, Thistleboon.
For many years, the main industries in Mumbles were oyster-dredging, farming and quarrying and this article seeks to give a flavour of local life at the cliff face.
Extracted from ‘Lime Burning on the Gower Peninsula's Limestone Belt,’ by L. A. Toft Industrial Archaeology A.B. Searle, a furnace technologist,
... produce Mumbles (and later Swansea, or Cambrian) Marble probably came from the Colts Hill Quarry at Mumbles, although there are references (for example Lewis) 19 to the Mumbles Head area ...
Rather Mumbles Marble is a marble in the commercial sense being a limestone capable of taking a polish to produce an attractive appearance.
The limekiln was a hive of activity and I could just see the red and orange glow from the kiln where the lime came down.
... are the remains of two limekilns, in which limestone was burnt using coal into lime, which was used on the fields as fertilizer, for the whitewashing of houses, exported . . .
Everything flows and nothing abides, Everything gives way and nothing stays fixed - Heraclitus
An extract from Regency Mumbles
Jessica's Nature Blog - information
A geological fault runs right through the limestone of Mumbles Hill near Swansea. Within this north-south fault, calcite crystals formed. Iron minerals
.The line had originally been built in 1804 to transport limestone from the quarries of Mumbles to Swansea and thence to the markets beyond, but one ...