still in use, the bolitho estate office was built in 1860, and at that time the first floor was a bank with the vault under the caretaker's ground floor accommodation. wagon drivers would stop at the bank to collect their money before driving up chyandour coombe to the smelting works. in 1883 the smelting works was the largest of nine in cornwall covering to . it consisted of a number of long, one storey, slated buildings with several chimneys belching smoke and flames. there were four furnaces which were built of brick thick and clamped with iron bands. each lasted five to six weeks, when it required rebuilding. fifteen men worked twelve hour shifts, with nights every other week, for 19 shillings a week. the tin ore was stored between large wooden barriers (known as hutches) with each compartment storing differing qualities. the ore came straight from the mines, or from ″valuable″ australian stream ore (containing 75% tin), or low quality ore from the ″red river″. the ore was heated and the tin flowed into cast iron crucibles where it was re-heated to remove impurities. it was then ladled into bars, blocks, ingots, etc., which weighed from one pound to a hundredweight or more. a small iron slab with messrs bolitho's trade mark was laid on the molton tin to leave an impression and the tin was shipped within this country or exported to russia, america, etc.