Philip Danforth Armour Sr. was an American meatpacking industrialist who founded the Chicago-based firm of Armour & Company. Born on a farm in upstate New York, he initially gained financial success when he made $8,000 during the California gold rush from 1852 to 1856. He later opened a wholesale soap business in Cincinnati, then moved it to Milwaukee.

The meat-packing industry handles the slaughtering, processing, packaging, and distribution of meat from animals such as cattle, pigs, sheep and other livestock. Poultry is generally not included. This greater part of the entire meat industry is primarily focused on producing meat for human consumption, but it also yields a variety of by-products including hides, dried blood, protein meals such as meat & bone meal, and, through the process of rendering, fats.