Issues include whether it is OK to drink hot beverages while walking on a motorized machine and appropriate footwear.

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He said the machine moved slowly at walking pace along the tracks putting the new equipment in the ground.

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Walking in I pass a dour-looking lady, clipped to the machine by her affinity card, mesmerized by the spinning wheels.

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Demuren said the suspect underwent regular screening -- walking through a metal detector and having his shoulder bag scanned through an X-ray machine.

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