The historical industrial heartland of South Australia was the Upper Spence Gulf or the Iron Triangle as it was known in the mid-to late 20th century. The region was semi-arid and the existence of the industrial towns of Port Pirie, Port Augusta and Whyalla were dependent on water being piped from the River Murray. This was the Morgan-Whyalla pipeline that went via the mid-north of SA (ie., Burra, Spalding and Crystal Brook).

Regional South Australia depends on water piped from the River Murray. Port Pirie, Port Augusta and Whyalla could not have existed without that 358 kilometre long, above ground pipeline that was constructed in the 1940s by the Playford Government. Hence the pipeline can be seen as an integral part of the South Australia’s industrial infrastructure. This is how I interpreted it.