The Science channel has a series called Super Factories. The particular
episode I'm watching has a segment on the Heinz factory in the UK. They
do canned beans there. They make 4500 cans per minute, about 4 million
cans a day. 1200 tons of dried beans are shipped in every week.

Each bean is inspected by lasers and split beans or pebbles are rejected
but not wasted. They become fertilizer.

Tomato paste comes from Spain, Italy, California Same spices since 1892
are added. Beans are cooked in the can using rotary steam cookers.

If you are looking for it on cable, it is episode 3 and will repeat or
be available on demand. The title is NASA Rocket Factory.