Sentence:  &#91;[https://babel.hathitrust.org/cgi/pt?id=mdp.39015077569393&view=1up&seq=6 page 4]&#93; [T]he <WSD>larry</WSD> had been filled to overflowing. When the controller was moved to the third point there was a jarring of the <WSD>larry</WSD>, which shook off more of the fine coal and created a dust cloud that enveloped the <WSD>larry</WSD>. This dust cloud was ignited by an arc at the wheels. The flame enveloped the <WSD>larry</WSD> and the operator, who was standing at the footboard at the controls. He received severe burns on the hands, forearms, face, and neck. [...] &#91;[https://babel.hathitrust.org/cgi/pt?id=mdp.39015077569393&view=1up&seq=7 page 5]&#93; Coal dust should be kept from tracks on which electric locomotives or slate larries travel. 
Meaning of the word marked with <WSD> tags:  A small cart or wagon used on the tramways in mines to carry coal or rubbish.