A notice from Lord #Penrhyn warning quarrymen not to support the North #Wales Quarrymen's Union - it didn't work... #geology #thestoryofslate
@jvh-vt.bsky.social
@jvh-vt.bsky.socialA notice from Lord #Penrhyn warning quarrymen not to support the North #Wales Quarrymen's Union - it didn't work... #geology #thestoryofslate
@globalvisibility.bsky.social@jvh-vt.bsky.socialSequence of images capturing the 1896 'Great Blast' at the #Penrhyn Quarry, #Wales - they used 7 tons of gunpowder! #geology #thestoryofslate
