only a few hours, so a very adequate ideamay be formed of the strength and solidity of thestructure. The masons experienced exceptional diffi-culty in removing one or two of the stones, whichweighed no less than 2*4 tons each, while 16 tons of.masonry in all were removed and fifty props inserted… … FELLING A 200-FOOT STACK BY UNDERPINNING AND BURNING in their place. This chimney came down very quicklyafter the props were lighted, the fall taking place in10)^ minutes, whereas it usually takes half an hour toburn out the supports. Our photograph was securedas the chimney fell over, and it shows…
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![An illustration from [Catalog] (1915)](https://img.insideoutlibrary.com/img/200/ia-catalog00fold-54-58.webp)
