* These sizes of wrought iron chain are no longer manufactured in the United States. The source is ASTM A56-68, Specifications for Wrought Iron Crane Chain.
Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 7, grp. 13, art. 101, tbl. S-2
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.