Llun: 1
Mountain Ash. Cynon Valley summit of Mynydd Merthyr woods/quarry at Newtown 1986

Trees colonising coaltip at Mountain Ash. Lower Cynon Valley, 30/09/73

Dyddiad: 30/09/1973

Llun: 2
Polluted wood by Phurnacite works. 1973 and 1974. Trees dying, foliage black, ground flora alive

Dead osk killed (?) by Sulphur dioxide from Phurnacite works, near Aberdare, September 1973
Enw rhywogaeth Mary: Oak
Enw gwyddonol: Quercus spp
Enw cyffredin: Oak

Dyddiad: September 1973

Llun: 3
Polluted wood by Phurnacite works. 1973 and 1974. Trees dying, foliage black, ground flora alive

Dead oak, living birch to lee of Phurnacite works, September 1973
Enw rhywogaeth Mary: Oak
Enw gwyddonol: Quercus spp
Enw cyffredin: Oak

Dyddiad: September 1973

Llun: 4
Polluted wood by Phurnacite works. 1973 and 1974. Trees dying, foliage black, ground flora alive

Blackened sycamore to leeward of Phurnacite works, Cynon, 04/04/74
Enw rhywogaeth Mary: Sycamore
Enw gwyddonol: Acer pseudoplatanus
Enw cyffredin: Sycamore

Dyddiad: 04/04/1974

Llun: 5
Polluted wood by Phurnacite works. 1973 and 1974. Trees dying, foliage black, ground flora alive

Dead beeches to lee of Phurnacite works, Cynon Valley, 30/09/73
Enw rhywogaeth Mary: Beech
Enw gwyddonol: Fagus sylvatica
Enw cyffredin: Beech

Dyddiad: 30/09/1973

Llun: 6
Polluted wood by Phurnacite works. 1973 and 1974. Trees dying, foliage black, ground flora alive

Dead oaks down valley from Phurnacite works. Cynon Valley, 30/09/73
Enw rhywogaeth Mary: Oak
Enw gwyddonol: Quercus spp
Enw cyffredin: Oak

Dyddiad: 30/09/1973

Llun: 7
Cynon burning tip - seconds

River Cynon. Burning tip Dyffryn from Railway siding by wood club rush, 28/09/84
Enw rhywogaeth Mary: Wood club rush
Enw gwyddonol: Scirpus sylvaticus
Enw cyffredin: Wood Club-rush

Dyddiad: 28/09/1984

Llun: 8
Cynon burning tip - seconds

Burning tip Mountain Ash, October 1984

Dyddiad: October 1984

Llun: 9
Cynon burning tip - seconds

Cynon burning tip in rain. 17/10/84

Dyddiad: 17/10/1984

Llun: 10
Cynon burning tip - seconds

Young elder leaves already black with carbon. Phurnacite, 04/04/74
Enw rhywogaeth Mary: Elder
Enw gwyddonol: Sambucus nigra
Enw cyffredin: Elder

Dyddiad: 04/04/1974

Llun: 11
Cynon burning tip - seconds

8-14% of coal in Cynon burning tip 12/10/84

Dyddiad: 12/10/1984

Llun: 12
Cynon. Burning tip below Phurnacite works, Dyffryn, 1984

Dead birches. Summit of Dyffryn burning tip North of Mountain Ash, 23/10/84
Enw rhywogaeth Mary: Birch
Enw gwyddonol: Betula

Dyddiad: 23/10/1984

Llun: 13
Cynon burning tip. Fungi

Verbascum nigrum. Burned shale, coal. Mountain Ash burning tip. 23.10.84
Enw rhywogaeth Mary: Verbascum nigrum
Enw gwyddonol: Verbascum nigrum
Enw cyffredin: Dark Mullein

Dyddiad: 23/10/1984