We found the following article by B.I. Spaanderman in the 1991 edition of the old Johannesburg Historical Foundation's journal Between the Chains. It looks at a number of South African mills with a particular focus on Millbank, the closest to Johannesburg.
For a mere fifty cents you can ask the watchman at Bradshaw’s Mill in Bathurst to set its wheel in motion. It costs a few cents more in Graaff-Reinet. The beautifully restored Josephine Mill in Rondebosch is a delight, and an informative booklet has been produced by the Historical Society of Cape Town describing its history and restoration.
The water-mills of South Africa are mainly located in the Cape Province by virtue of the settler population. These were built from the late 1600s to the late 1800s. Mills in Natal, the Orange Free State and the Transvaal were built from the middle to the late 1800s. The most definitive study to date is Water-mills, windmills and horse-mills of South Africa by James Walton, published in 1974. Owing largely to his interest, a number of the mills have been restored, such as the Josephine Mill, but more sadly, many have been left to decay, or have been destroyed by fire and other natural disasters.
Bradshaw’s Mill was built by the 1820-settler Samuel Bradshaw and his brother. He was assisted by the young Jeremiah Goldswain, who worked for “Measerss Bradshaws and Wiggall for servel months, at this time cash was so scarce that it was almost imposable for andy one to...