The Leslie Salt Company was a salt-producing company located in the San Francisco Bay Area, at the current locations of Newark, Hayward and other parts of the bay.
According to the San Francisco Chronicle in 1983, Leslie Salt had "been in business since 1901 and since 1978 [had] been a subsidiary of Minneapolis-based Cargill Inc".
By the 1940s, Leslie Salt under the dominant ownership of the Schilling family [4] had become the largest private land owner in the Bay Area.
By 1959, they were producing more than one million tons of salt annually, on over 26,000 acres (11,000 ha) of bay salt ponds.
[3] A box of Leslie Free Running Salt, with the brand name obscured, can be seen in The Three Stooges short "An Ache in Every Stake" (1941).