> Pressure of work governs common sense at the coal face, Pater. > This guy will be running as soon as he can, even if it was on fire :-/.
I've spent time on a coal face, far to often, I have seen the Longwall machines running *while on fire*. Down-time on a production face loss is measured in the hundreds of dollars per *minute*. The one that I really liked was the Band-Aids on the 4000VAC trailing cable. The Foreman said that the front office had no problem supplying Band-Aids but they complained about the amount of electrical tape that was requested. Let us all hope "Free-Energy" comes soon... > > In machines we made, we often used "opto-link", a plastic > > fibre cable, > If you have a circuit for the optical RS232, I'd appreciate it, as it > will save me thinking. I'll build a few. This would not work in a coal mine. Been-there-done-that. The fiber cable looked to much like Wire-Rope. They kept cable-tieing the 4000VAC cable to it. These cables are about the size of your leg. They could not splice it when it broke, and they could not keep the splices clean when they tried. If you do want to make some, Agalient (sp?) makes the plastic fiber and some plastic fiber transceivers. Get a couple of those and hook up to a MAX232 on each end. I think B&B Micro, and/or Black-Box, sells such a thing off-the-shelf. -- � � � http://www.softwaresafety.net/ �http://www.unusualresearch.com/ http://www.bpaddock.com/ -- Author: Bob Paddock INET: [EMAIL PROTECTED] Fat City Hosting, San Diego, California -- http://www.fatcity.com --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
