The chicken or the egg; at Cal-Maine Foods, it's the egg -- as the company's 27-plus million laying hens attest! The largest shell egg producer and marketer in the US, Cal-Maine sells more than 820 million dozen-eggs a year. It is also one of the top producers of specialty shell eggs (which are Omega-3 enhanced, organic, and cage free), marketed under the Egg-Land's Best, Farmhouse, and 4-Grain brands. Cal-Maine's operations span all phases of shell egg production: hatching chicks, making feed, housing hens, and distributing eggs. Customers include US grocery stores, Publix, superstores, Wal-Mart, and warehouse clubs, Sam's Club, as well as foodservice distributors and makers of egg products, dotting 29 states.