The mineral known as wolfram (also known as wolframite) was discovered in 1894 in the headwaters of the Hodgkinson River scattered over the surface as bunches in quartzose boulders or in drifts interspersed with coarse gravels.
[1] Demand for high grade wolfram, after the development of tungsten as a lamp filament in 1904, and for molybdenite for use in patent alloys, led to an early interest in rare metals by British firms, the most prominent being George G. Blackwell and Sons of Liverpool.
John Moffat, a large speculator and enterprising investor in north Queensland mining, was diversifying his interests through steady exports of rare metals.
[1] The wolfram mining industry passed through a depression for several years from 1910 chiefly because of the exhaustion of the residual surface accumulations of ore, thus ending the days of the gougers.
In 1916 the Irvinebank Mining Company replaced the ball mill with stamps and installed a dynamo for lighting and a magnetic machine to separate wolfram from bismuth and the impurities from the concentrates.
[1] The advent of the Thermo Electric Ore Reduction Corporation of Britain sustained the Wolfram district through the war years with the government paying fixed prices.
[1] The Thermo Electric Ore Reduction Corporation failed to survive the slump in metal prices after the return to free market forces in March 1920.
A group of concrete foundations and engine mounts on the west side of the Wolfram road form the remains of the Irvinebank Company mill powerhouse and molybdenite tower.
[1] Opposite, on the eastern side of the road, a series of terraced building surfaces retained by heavy dry stone walls, formed the foundations of the Thermo Electric Ore Reduction Corporation's store and office.
[1] The Thermo Electric Corporation mill foundations to the south are connected to the store and office by a benched track supported by a rock retaining wall.
The mill foundations are extensive and comprise massive retaining walls of rough-dressed stone blocks, supporting eight terraced benches with concrete machinery mounts and rendered surfaces.
The Thermo Electric Ore Reduction Corporation Mill at Wolfram is important in demonstrating the evolution of rare mineral mining and processing practices in Queensland in the early 20th century.
[1] The Thermo Electro Co. office, a 1918 form-cast concrete building, is unique in relation to early twentieth century mining in north Queensland.
The heavy stone retaining walls with concrete machinery mounts rise up the steep slope in eight terraced benches and are the largest and most massive mill foundations recorded in north Queensland.
The mill is significant due to its association with John Moffat, who between 1872 and 1918, played an important role in the development of the base metal mining industry in north Queensland.