File:Limestone Quarry 4-21-14 091.jpg

The Delphi Limestone Quarry, Division of U.S. Aggregates, Inc.

The quarry in Delphi has been in operation since the late nineteen-forties. In 1994, U.S. Aggregates halted production out of the quarry that you see below, and allowed it to fill up with water. The plant currently producing limestone began production in 1994. The lake, which fills the quarry below, is approximately 32 acres (^{[convert: unknown unit]}) in area and 100 feet (30 m) deep.

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