The IGS recently rescued a hidden collection of more than 10,000 photographs of buildings that were built from Indiana limestone. The photos, originally used by the Indiana Limestone Company for marketing purposes, were housed in a dilapidated house in Bedford, Indiana, and were beginning to deteriorate. They were taken from the early to mid-1900s and illustrate architectural styles, limestone uses, and limestone types. Reflecting the urban transformation of the country, the collection details commercial, municipal, institutional, and residential building projects in nearly every state.
IGS staff categorized and scanned the photos and, working with the Indiana University Libraries, have made the Indiana and Chicago parts of Building a Nation: The Indiana Limestone Photograph Collection available on the Web.
Rocks and mineral resources are essential for Indiana’s continued economic development. Rich deposits of limestone, dolomite, gypsum, and sand and gravel are source materials for concrete and mortar used in building foundations, roadways, and bridges. The IGS mapping program accurately locates these mineral commodities so that effective routing and shipping keeps their cost as low as possible. Another valuable resource is Indiana limestone, renowned the world over as a premier building stone. Survey scientists carefully map, test, and assess this valuable mineral resource to benefit the state’s economy.
Coal, oil, natural gas. Scientists at the IGS are involved in assessing the distribution and quality of the state's energy resources and determining the feasibility of developing new ones like shale oil, coal-bed methane, and geothermal energy.
The IGS's important sources of information — geologic maps, rock and core collections, and well records — help geologists refine our understanding of these vital resources to help Indiana sustain a viable economy.
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