I also found this:
“Brand Name: Quikrete Patio Paver Limestone Base No. 1150-49”
What is lime good for? Hmm... Or it could just be sand.
“What is lime good for?”
http://64.233.169.104/search?q=cache:2-BY-G8zayQJ:www.ces.ncsu.edu/depts/poulsci/tech_manuals/disposal_dead_poultry.html+lime+for+covering+dead+animals&hl=en&ct=clnk&cd=6&gl=us