Who might these people be? Could they have imagined an internet that would one day make their cement work available to a global audience? Did they wonder if anyone would see their names one day? I make the names out to be Burton, Matekjo, and Matthews.
UPDATE: As reported by Steve Howard and others, Tom Burton, John Matekjo, and Jeff Matthews were early engineers at what would have been called RATV at the time. Steve took up the reigns following them. This cement pour was likely done as equipment moved from its original location to Tawes.