Bullets Barton
From superman.nu: Supermanica
"Bullets" Barton
A Metropolis gangster, notorious for his practice of melting down lead to make his own high-powered bullets, who, under the alias Walter Brown, purchases one of six rare lead meteors donated by Superman to a charity auction, only to discover, when he attempts to melt it down to manufacture his bullets, that his meteor has a kryptonite core. Superman, who has discovered only belatedly that the six meteors contain kryptonite and has begun surreptitiously repossessing them to prevent word of their kryptonite content from reaching the underworld, ultimately apprehends Barton and disposes of the kryptonite with the aid of Jimmy Olsen in July 1956 (S No. 106/2: "The Thefts of Clark Kent"). (TGSB)