The John D. Hoff Asbestos Company, of San Diego, is operating an
asbestos mine in the San Jacinto Mountains, from the product of which a
variety of fire-proof material is made, including roof paints, roofing,
boiler and steam-pipe covering, fire-clay goods, etc. This is the only
asbestos concern in the southern part of the State, and the business
seems to be on the increase. The works are located near Pacific Beach, 7
miles from San Diego. Asbestos is also found near Palm Springs, in the
San Jacinto Mountains, and several miles east of Indio.