UP's Laramie Tie Plant

Does anyone know where I can find information on UP’s tie plant in Laramie. It used a 30 inch gauge but thats all I know.

UP tie treatment plant, Laramie, Wy. Model RRer Feb80 p.93
Union Pacific standard branding code for track ties, lists various types of timber & treatment NMRA Bull Aug78 p.40j

see also:
CREOSOTE TREATING/TREATED LUMBER
Creosote plant- tie stacking, narrow-guage retort tramway
NMRA Bull May76 p.57
creosoting cylinders being shipped across 4 flatcars
NMRA Data Sheets D9k.2
Durrenberger model Mod RRer Nov88 p.91
Koppers pressure-treated wood used on Trailer-Train TOFC decks
ad Rwy Age Jan.18, 1960 p.53

Modern Tie plant. Koppers in Montgomery PA.
RR Mod Craftsman Mar93 p.99

simulating creosote Mod RRer Apr94 p.151

tie stacking NMRA Data Sheets D9m.

Vulcan diesel used in wood treatment plant.
Journal of TX Shortline RRs FebMarApr98 p.40

Wood Protection Co. Houston TX, mfts custom-preserved lumber, uses 8-ton Gerlinger lift, per ad for Gerlinger Co.
BusinessWeek Dec.24 1955 p.79

Thanx