The first Steeplejack, Jake Mallard, appeared in Luke Cage, Power Man #18 (April 1974), and was created by Len Wein and George Tuska.
Maxwell Plumm first appeared in Luke Cage, Power Man #18 (April 1974), and was created by Len Wein and George Tuska.
The character subsequently appears in Captain America #319 (July 1986), in which he was killed by the Scourge of the Underworld.
As Plumm unethically cut corners and safety and materials, Mallard's two brothers fell to their deaths when a girder slipped its cable in a sudden wind.
Mallard plunged several stories towards the street, and the impact caused his fuel tanks to explode, apparently killing him.