California Code, Labor Code - LAB § 270

No person, or agent or officer thereof, engaged in the business of extracting or of extracting and refining or reducing minerals other than petroleum, except persons having a free and unencumbered title to the fee of the property being worked and except mining partnerships in respect to the members of the partnership, shall fail or neglect, before commencing work in any period for which a single payment of wages is made, to have on hand or on deposit with a bank or trust company, in the county where such property is located or if there is no bank or trust company in the county, then in the bank or trust company nearest the property, cash or readily salable securities of a market value sufficient to pay the wages of every person employed on the mining property, or in connection therewith, for such period.

Any person, or agent or officer thereof, who violates this section is guilty of a misdemeanor.