Quarrying Granite, Concord, N.H.

Categories
Special Collections > Keystone Slides
Type
tiff scanned file from original glass slide
Description
Granite is quarried, not mined. That is, it is taken out of an open shaft, with no underground shafts leading off from themain opening, as is the case in marble quarries. The view shows a great granite pit, one of the largest in the United States. The stone is in layers, and is so very hard that it has to be blasted loose. The men in the foreground are busy chiseling these stones, preparatory to splitting them into the proper sizes. The stone is quarried in this manner. A foreman measures out on a layer the shape desired. On the line so laid down holes are drilled and charges of powder are inserted. These charges are set off, hurling a great mass of stone into the bottom of the quarry. The stones are then worked down by drills run by compressed air, and by hand tools such as you see the workman using. The kind of granite you see here is rather easily worked because it splits like wood. Its grain is so straight that steel wedges can be used to block the stone into the desired sizes. You perhaps have seen buildings partly made of granite. It is used in many of our great monuments, and every graveyard has many tombstones of this material. It is found in many colors,-red, pink, grey, and nearly white. These colors are usually streaked with veins of darker or lighter shades. The stone found in more than half of our states. The center of the industry is in New England. Maine, New Hampshire, Massachusetts, Connecticut, New York, Michigan, and California all have important granite quarries. The leading quarries in New Hampshire are at Concord, Milford, North Conway, and Fitzwilliam. At Keene, New Hampshire, is the second largest cutting shed in the United States.Keystone ID: 13709 Note: All titles, descriptions, and location coordinates are from the original Keystone Slide documentation as supplied by the Keystone View Company. No text has been edited or changed.
Rights
Copyright by the Keystone View Company. The original slides are housed in McConnell Library's Special Collections.