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Semicircular piece of shale

Spindle whorl of turned shale, of Roman date

"Curly" Bituminous Shale.

"Curly" Bituminous Shale.

Plain Bituminous Shale.

Plain Bituminous Shale.

Specimens illustrating the shale oil industry, viz:- "Curly" bituminous shale, "Plain" bituminous shale, Residual carbon from distillation of crude oil

Specimens illustrating the shale oil industry

Residual carbon from distillation of crude oil.

Residual carbon from distillation of crude oil.

Kimmeridge Shale.

Kimmeridge Shale.