I have finally managed to get this cache listing completed. I spotted this Windpump last year already, noted it in March 2011, took photos of it in July 2011, went away overseas, have battled to get back into the swing of things, and today, I finally managed to complete it! The original hide was on the opposite side of the property, away from the Windpump. But that did not last very long, as the people who own this vacant plot, put in a gate right where the cache was. So then I found a spot close to the Windpump. It can now be found on the main vertical post of the fence's corner. 
UPDATE: It seems as if the Vacant Land was sold and the new owner put up a fence and gates. It seems as if the house across the road (which I think is a church), makes use of the land for parking purposes. There is often a security guard, so PLEASE exercise extreme stealth when retrieving and replacing this cache. The good old "tying your shoe laces" or taking photos of insects should work. Watch out for muggles walking past as well. Thanks!
I was fascinated to find a number of farm windpumps still standing in what is now developed suburbia. Through geocaching, I share my fascination with you.
These Windpumps are a reminder of our farming days of yesteryear. I do not know the story behind this windpump, but it still stands in Randburg surburbia.
From South African photographer Chris Myburgh's website:
"The first records found of a windpump in South Africa, is from a painting drawn in 1848. Records were found of windpumps as from 1869 and the first import was in 1874. These were wooden constructions. The first all steel windpump was patented in 1855 in England."
There are a number of types of windpumps manufactured both locally and abroad. Each manufacturer has its own style and branding. You'll notice the Manufacturer's branding on the Wind Vane.
Windpumps (Windmills) are fondly referred to as "steel flowers" especially in the Karoo area where they can be found in abundance, providing much needed water to the farms.
Taken from the website: http://www.dwa.gov.za/groundwater/NORADToolkit/7.2%20Introductory%20Guide%20to%20Appropriate%20Solutions%20for%20Water%20and%20Sanitation.pdf
"What is a wind powered pump and how does it work?
Wind powered pumps use the energy generated by wind to lift groundwater to the surface. A rotor is mounted on top of a tower. The action of the wind turns the rotor, which through a gearbox drives a reciprocating shaft. This in turn drives the pump in the borehole.
Wind pump adaptations
The air-lift groundwater pump was developed to provide a low-cost pump for use in informal and rural settlements. This pump system can be operated with tyre pumps. It has a wind pack compressor, capable of storing wind energy as compressed air. This provides supplementary power to the pump. All the working parts of this pump are located above ground, making maintenance easy.
Wind pump requirements
The pump requires sufficient wind speeds for significant lengths of time. The wind pump must therefore be placed where there is a clear sweep of wind. Also, the borehole should provide enough water so that continuous pumping does not result in excessive drawdown. Storage for several days must be provided to cater for calm periods when there is insufficient wind speeds to pump water. Further, someone must be delegated to apply the manual brake to avoid damage during storms.