In the 14th century the blowing house evolved for use in the tin mining industry on Dartmoor. There is a blowing house above Yealm steps by a much used ford. On the left bank above the ford and under the steep slope of Furze Hill, is the blowing house one of the first to ever be properly examined and identified by the Devonshire Association in 1863. There are 2 mould stones each containing 2 mould cavities, one clearly shown in this photograph beside the walker.

Boddy Collection