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Jim GM4 DHJ ... Jim GM4 DHJ ... is offline
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On 27/09/2020 15:27, jon wrote:
On Sun, 27 Sep 2020 12:47:32 +0100, Jim GM4 DHJ ... wrote:

https://www.youtube.com/watch?v=s-4E...el=JagoHazzard


Cost cutting, using high alumina cement.

and no consideration of non-proportional collapse .....
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