Situated 4 kilometres (2.5 mi) outside Blackall adjacent to the newly opened branch railway line the scour continued to operate until its closure in 1978.

Western Queensland was the exception with the construction of mechanical scouring plants in Charleville, Barcaldine, Ilfracombe, Blackall, Longreach, Winton, Julia Creek, Richmond, Maxwelton and Alba near Hughenden between the late 1890s and the early 1920s.

[2] The same year the Blackall Proprietary Woolscour Company was founded by five members of the local grazing and business community with John Henry Hart as chairman and in December tenders were advertised for the sinking of a bore "not more than three miles from the township of Blackall"; in February 1906 the tender of the Intercolonial Deep Well-Boring Company was accepted.

[3][4] In September 1906, the Blackall Proprietary Woolsour Company contracted Renshaw and Ricketts, Rockhampton builders, to erect in four months the scouring and shearing shed was using hoop pine from Maryborough.

[1] The Western Queensland Meat Export Company continued to operate the scour, mostly at a profit, until 1964 when it was sold to K Austin of Glencoe Station.

[1] From 1998, Brisbane architectural firm Conrad Gargett has undertaken conservation work to stabilise the buildings and provide safe visitor access.

[6] Located in a rural setting approximately 4 kilometres (2.5 mi) north-northeast of Blackall on the eastern side of the railway line, the woolscour complex consists of a number of timber framed corrugated iron sheds, varying in size and complexity and serviced by an artesian bore, settling ponds, a railway spur line and sheepyards.

[1] The main building, a large L-shaped conglomeration, consists of a series of attached sheds with timber trussed gable roofs.

Areas associated with the successive phases of the wool processing, the shearing, classing, scouring and drying and pressing, are defined by changes in floor level and separate roofs.

[1] The largest space, a long rectangular skylit shed, contains machinery and equipment for scouring, fellmongering and drying and a small office in the southwestern corner.

[1] The scour buildings contain extensive machinery and equipment, including steam engines, boilers, cast iron tanks, dryers, wool presses, and a complex system of belts, pulleys and shafts.

[1] A shallow pitched corrugated iron roof on timber posts situated just south of the main building, shelters the head of the artesian bore and the generating plant.

[1] A fuel depot, an elevated timber and corrugated iron shed, is sited southwest of the main complex where the spurline rejoins the railway line.

The building fabric shows signs of age and wear including the accumulation of dust and lanolin, the effects of weathering and some decay of structural elements.

As a well designed and efficiently organised example of the first generation of fully mechanical scours, the Blackall Woolscour demonstrates a high degree of technical achievement at the time of its construction.