As early as 1776, limestone quarried in the Rockaway Quarry lime pits was used to whitewash the newly built Presidio of San Francisco . More recent investigations suggest that early settlements in San Pedro Valley also used this limestone for their foundations. In 1907, the Rockaway Beach quarry was established as a continuously-operating commercial entity known as the Stone Brothers.
Limestone quarried at the Rockaway Quarry lime pits was used to whitewash the Presidio of San Francisco and early settlements in San Pedro Valley also utilized this limestone for their foundations. The Rockaway Beach quarry, established in 1907, became a commercial entity known as Stone Brothers.