Cwmystwyth Mines
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Cwmystwyth mines are located in Cwmystwyth, Ceredigion, Wales and exploited a part of the Central Wales Orefield.
Cwm Ystwyth mine scape, present day
Main building of Cwmystwyth lead mine
Graig y Ddalfa at Cwmystwyth lead mines
Old mine workings below Craig-y-Ddolfa, east of Cwmystwyth
Lead
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Lead is a chemical element with the symbol Pb and atomic number 82. It is a heavy metal, denser than most common materials. Lead is soft, malleable, and has a relatively low melting point. When freshl
Lead fishing weights
A sample of lead solidified from the molten state
The Holsinger meteorite, the largest piece of the Canyon Diablo meteorite. Uranium–lead dating and lead–lead dating on this meteorite allowed refinement of the age of the Earth to 4.55 billion ± 70 million years.