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Terry Mackenzie-hoy

Terry Mackenzie-hoy

Mackenzie-Hoy is a consulting acoustics and electrical engineer – machoy@iafrica.com

Bitcoins – a quick way to lose it all

13th October 2017 We all know that there IS a thing called a bitcoin. All over the show, there are stories about bitcoin investors who are now millionaires. What is the truth? A little story: Tim and I were working at a mining camp in the Congo. The mining camp was dry; no alcohol permitted. We followed the rules... 

Sparklepop and the Magic Dragon

6th October 2017 Sometimes I get involved in advertising film shoots. The first advertising film shoot that I attended was in the 1980s. It was held in a large open concrete yard owned by Eskom. The storyline was: a pretty woman is  walking along a sidewalk, next to a tree-lined road. We cut to a man who is... 

Fade to black

29th September 2017 About 20 years ago, I wrote the following: "What do you see? You see the ruins of a building. It has burnt down. There are pathetic little burnt bundles of bits strewn around everywhere. And the coroner  (the coroner! ) is there. He's investigating what could have possibly caused this... 

An ill wind

22nd September 2017 One commentator said this: "The renewable energy purchase programme, launched in 2011, has been celebrated as a spectacular success directing private capital into public infrastructure and a model for attempts to lure private investment into other projects." I am sure this is how wind farm... 

Fate is against us

15th September 2017 Recently, somebody was  discussing minibus taxis and how badly they drive. It was mentioned that, in fact, they drive very well: they pass through the narrowest of gaps between cars, they glide down pavements. They can reverse at high speed through rush hour traffic. They can embark and disembark... 

Pluck the strings and weep

8th September 2017 On May 8, 2016, supporters of the green movement reached a moment of nirvana – the state of perfect peace, highest happiness and liberation from the repeating cycle of birth, life and death. Not since the end of Margaret Thatcher had their dreams been so realised. The huge event was this: on a... 

Tell me a funny story

1st September 2017 So, since the 20-year rule (the period that has to elapse before I can tell embarrassing engineering stories where my clients who were involved) has lapsed in some cases, here is one of the stories.   I was working for FW.  Empersa Nacional de Hidrocarbonetos de Moçambique (ENH) had decided that... 

The unintended effect of excessive safety measures

25th August 2017 Sometimes certain things just come to a logical plateau. The best way of doing them or the best process for achieving a result has been found. I have this belief that the process of safety education was once at a pinnacle and is now going downhill. I am not sure why this is the case, but I think... 

Electrical Power Generation 101

18th August 2017 A few things we should possibly all know if we wish to talk about energy. The national grid is not a energy storage dam. What goes into the grid comes out of the grid very shortly, almost instantaneously. Thus, the amount of power generated matches the amount of power used, apart of losses due to... 

The costs of safety

11th August 2017 A well known South African electrical cable manufacturer will not hold it against me when I say that, at one time, about 25 years ago, the manufacturer ran the most unsafe cable making operation that I had seen. To the accompaniment of whistles and shouts, a group of men dragged wires, PVC... 

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