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Photographer: Duane Hall
Taken: June 4, 2015
Caption: Phosphate Mine Sign on Trail
Additional Description:    Phosphate in these limestone layers came from shellfish deposited here some 400 million years ago. Recently, geologically speaking, these limestone ledges became exposed.
   Through the years, unknown and uncounted men have passed this ledge, ignorant of the wealth it held. Certainly, some of them needed the phosphate to revitalize their worn-out farms.
   About 1880, man learned the importance of phosphate as a fertilizer, discovered it here, and began to mine it.
Submitted: June 22, 2015, by Duane Hall of Abilene, Texas.
Database Locator Identification Number: p312215
File Size: 0.410 Megabytes

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