Mount Union borough
The Harbison-Walker Works
The Harbison-Walker Refractories works, the plant that made Mount Union 'Bricktown USA.' Beehive kilns, brick stacks, and acres of works turning Jacks Mountain ganister into the silica brick that lined America's steel furnaces, with the town it built climbing the hill behind. Photo: Library of Congress (HAER)
Sources
- Brick Yards README + LOC HAER pa2723 (Harbison-Walker plant, general view 2)
- Photograph credit: Library of Congress (HAER)
Checked 2026-08-22 · Historic Mount Union collection