Marley is recorded as doubting " whether the Romans or the Monks [ of Rievaulx ] ever smelted any part of the main bed of ironstone, which has in recent years proved such a source of wealth to the North, because in the various remains of slag and refuse left by them in Bilsdale, Bransdale, Rosedale, Furnace House in Fryupdale, Rievaulx Abbey, and other places, no traces of the main seam of ironstone have been found, although'dogger band'( or thin clay bands of ironstone ) and'nodules'have been so found along with the charcoal and slag ."
22.
The attached drawing is a simplified and corrected version of one that appeared in the " Illustrated London News " of 1862 . "'C "'is the pump staple in which pump rods worked by a subsidiary beam operated . "'D "'is the worked out and abandoned high main seam . "'G "'is the location of the blockage above the yard seam and covering the end of the furnace drift . The vertical passage near "'H "'is the staple containing a wire ladder connecting the yard and low main seams.
23.
The attached drawing is a simplified and corrected version of one that appeared in the " Illustrated London News " of 1862 . "'C "'is the pump staple in which pump rods worked by a subsidiary beam operated . "'D "'is the worked out and abandoned high main seam . "'G "'is the location of the blockage above the yard seam and covering the end of the furnace drift . The vertical passage near "'H "'is the staple containing a wire ladder connecting the yard and low main seams.
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