Cefn Coed Colliery spoil heap, general plan, hydrological plan and remedial plan, scale 1:2500; tip stability section A and tip stability section B (cross sections). 1 Sep 1987

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National Coal Board Colliery Tip PlansD/D PRO/NCB1

Aberpergwm Tip: various plans, including general map of the surrounding area, cross sections showing contours of tip and details relating to the water level under the tip. Oct 1969-May 1981D/D PRO/NCB/1/1/1-45

Blaengwrach Tip: plans showing stability sections, earthworks and material to be removed from tip. Scale 1:500. 28 Mar 1980D/D PRO/NCB/1/2/1-2

Cefn Coed Colliery spoil heap, general plan, hydrological plan and remedial plan, scale 1:2500; tip stability section A and tip stability section B (cross sections). 1 Sep 1987D/D PRO/NCB/1/3/1-5

Hendy Merthyr Colliery tip: plan of tip and surrounding area. Scale 1:2500. Mar 1975D/D PRO/NCB/1/4/1

Margam Colliery: location plan showing phase 1 tipping area. Scale 1 inch to 1 mile; general plan showing phase 1 tipping area. Scale 1:2500; hydrological plan showing phase 1 tipping area. Scale 1:2500; final profile of stability sections 1-1 and 2-2. Scale 1:500 (2 plans); phase 1 tipping area No 1 Bund stability sections C-C. Scale 1:2500; drainage under tip drains and peripheral ditches. Scale 1:2500; plan of final profile of earthworks. Scale 1:2500; limit of tipping area prior to diversion of overhead power lines. Scale 1:2500; phase 1 tipping area - final profiles of section 1-1 and 2-2. Scale 1:500 (2 plans); phase 1 tipping area final profile sections A B and C. Scale 1:500; and phase 1 tipping area mining subsidence plan. Scale 1:2500. May 1979D/D PRO/NCB/1/5/1-13