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I have the Trains video: making & moving steel on the rails. In the video they show two Hewlett Unloaders unloading coal from a ship. I have searched the patent office using the information in the tape plus just about anything i can think of on the net. Anyone know where I can find infomation on these machine's? If you've not seen one; think of one of those oil pumps used in oil fields, rocking up and down. Make it a hundred feet long and the neck that dips down brings up 10 tons of coal on every lift in it's bucket. Looks like a dinosaur or giant insect feeding. Thanks, Kevin
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