How I Built This with Guy Raz

Bob's Red Mill: Bob Moore

In the 1960s, Bob Moore read a book about an old grain mill and was inspired to start his own. Using giant quartz stones from the 19th century, he made dozens of different cereals and flours, positioning his company at the forefront of the health food boom. Today, Bob's Red Mill has grown into a $100 million business – and at nearly 90, Bob goes to work at…