Need to add calcium?

[Scooby308]

I've heard of grinding eggs shells to feed chickens to add calcium for shell development. I saw this today as calcium for human supplement. I thought it was a pretty nifty idea. You could use this process to add calcium to you livestock diet.

http://americanoverlook.com/she-dum...then-grinds-them-up-her-reason-who-knew/65528