Sentence:  The mixing 48-in. belts lie flat and run from the bottom of the mixer bins to two coal mixers which deliver the coal to a reversing 42-in. belt conveyor, taking it to either one of two 36-in. belts, running to the top of two <WSD>larry</WSD> bins. Each <WSD>larry</WSD> bin is located between two batteries of ovens, [...] Under the <WSD>larry</WSD> bins are provided platform scales which enable the <WSD>larry</WSD> operator to fill his <WSD>larry</WSD> with the exact amount of coal to charge an oven. 
Meaning of the word marked with <WSD> tags:  A small cart or wagon used on the tramways in mines to carry coal or rubbish.