NEW DELHI, April 20 -- Jim Brunton pulled his boxy delivery truck into the loading dock of his family's milk plant after wrapping up his weekly door-to-door route, which starts around 4 a.m.

He sprays down his boots before going inside the sterile facility.

After the walk-in cooler is the bottle washing room, where used bottles get ready to be refilled according to the reports published in witf.org.

Four thousand gallons of milk a week are bottled here. That includes some chocolate milk, and a little buttermilk for restaurants, too.

In the processing room, a series of metal tubes stretch across the ceiling connecting large silver vats.

Raw milk is pumped into a holding tank before going into the homogenizer.

"It smashes the cream into...