Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
After polytechnic I spent 15 years in welding inspection, mostly offshore North Sea, then 30 years in IT. I can still remember the thrill of getting my hands on a IBM AT PC with a 30Mb hard disk !