According to John Sorenson, it is interesting that Ether 10:23 accurately distinguishes brass from copper in one subtle bit of context. The record says that the Jaredites "did make" brass; however they dug up heaps of earth "to get ore . . . of copper." Naturally they would not have got "ore of brass" or bronze, for those metals must be manufactured by alloying. The terminological distinction comes out exactly as it would from a person who wrote with a real knowledge of metallurgy. [John L. Sorenson, An Ancient American Setting for the Book of Mormon, p. 284]