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Steel manufactureIn 1857, Robert Mushet, an English metallurgist, received a U.S. patent for a method of manufacturing steel which improved the Bessemer process for making steel that would be more malleable. (No. 17,389). His process added manganese in the form of spiegeleisen, an alloy of iron and manganese derived from a Prussian iron ore consisting essentially of a double carbonate of iron and manganese. The softness or hardness of the steel could be regulated by diminishing or increasing the proportion of the triple compound of iron, carbon and manganese. He chose to use the alloy of the Prussian ore because it was more free of sulphur, phosphorus and silicon. Mushet also discovered tungsten steel, an alloy with about 8% tungsten.
Never Lie to Your Mother
Peter invited his mother for dinner, during the course of the meal; his mother couldn't help but notice how lovely Peter's flat mate, Joanne, was.
She had long been suspicious of a relationship between the two, and this only made her more curious.
Over the course of the evening, while watching the two interact, she started to wonder if there was more between Peter and his flat mate than met the eye.
Reading his mum's thoughts, Peter volunteered, 'I know what you must be thinking, but I assure you, Joanne & I are just flat mates'.
About a week later, Joanne came to Peter saying, 'Ever since your mother came to dinner, I've been unable to find the frying pan, you don't suppose she took it do you?
'Well I doubt it, but I'll e-mail her just to be sure' said Peter.
So he sat down and wrote
I'M NOT SAYING THAT YOU 'DID' TAKE THE FRYING PAN FROM MY HOUSE. I'M NOT SAYING THAT YOU 'DID NOT' TAKE THE FRYING PAN BUT THE FACT REMAINS THAT IT HAS BEEN MISSING EVER SINCE YOU WERE HERE FOR DINNER.
Several days later, Peter received an email from his mother which read
I'M NOT SAYING THAT YOU 'DO' SLEEP WITH JOANNE, AND I'M NOT SAYING THAT YOU 'DO NOT' SLEEP WITH JOANNE, BUT THE FACT REMAINS THAT IF SHE WAS SLEEPING IN HER OWN BED, SHE WOULD HAVE FOUND THE F**KING FRYING PAN BY NOW.