(a)Chlorate shall not be crystallized, ground or packed except in a room or place not used for any other purpose, the floor of which room or place shall be of cement or other smooth, impervious and incombustible material, and shall be thoroughly cleansed daily.(b)Wooden vessels shall not be used for the crystallization of chlorate, or to contain crystallized or ground chlorate; provided that this rule shall prohibit the packing of chlorate for sale into wooden casts or other wooden vessels.
