The photograph above was taken by Reeves Studios, founded in Atlanta, Georgia (1914). The Atlanta History Center's Kenan Research Center has digitized a number of Reeves Studio photographs with funding from the Institute of Museum and Library Services (IMLS).
Close attention to the cutting shed image above reveals a crane operator situated inside a Pawling & Harnischfeger 15-ton type "C" I-beam crane cab. Such cranes were used in lumber mills and granite quarries, and images of its use in these and other contexts may be found in a set of digitized images from the Wisconsin Historical Society.
The Southeastern Architectural Archive retains the records of the Weiblen Marble and Granite Company, as well as supplemental information pertaining to its Stone Mountain and Elberton, Georgia quarry operations. An inventory of holdings may be located here.
Stone Mountain granite was used on many New Orleans public projects, including the pedestal of the Lafayette Square Benjamin Franklin statue, the Huey P. Long Bridge, and -- at the request of City Engineer A.C. Bell -- was used to pave the riverfront between Thalia and Nuns Streets for the construction of the Pauline Street wharf.(1)
(1) "Dock Board Lets Paving Contract." The Daily Picayune (25.1.1913), p. 6.
Image above: Reeves Photo Atlanta. Stone Mountain Granite Corporation, Stone Mountain, Georgia, c. 1914-29. Weiblen Marble and Granite Works Office Records, Southeastern Architectural Archive, Special Collections Division, Tulane University Libraries.