Nothing in this part shall be held to apply to persons, partnerships or corporations who store not to exceed twenty-five (25) pounds of said explosives, except nitroglycerine, in any one place at any one time, nor to the manufacturing or storing of drugs: Provided, however, that for good cause shown, the Chief Mine Inspector or deputy may issue a permit for temporary storage of any of said explosives, except nitroglycerine, not exceeding five hundred (500) pounds.
Okla. Stat. tit. 63, § 128.2