Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Human Cost of Egypt's Lucrative Limestone Quarries by Ken Bredemeier In the Egyptian province of Minya, thousands of men toil in backbreaking, often dangerous conditions in the region's limestone quarries. The stone they produce is an important source of cash for the province, but the human cost is enormous.