Did UP ever own any 4-6-2 Heavy Pacific steam locomotives?

Did UP ever own any 4-6-2 Heavy Pacific steam locomotives? If so, who was the builder? Are there any pictures out there of them? Thanks

How heavy is "heavy"?

http://steamlocomotive.com/pacific/

This link to "steam locomotive" may help you. UP appears to be a "heavy" road with Alco, Baldwin & Lima products.
You will need a UP steam book to provide more info.

For anyone else, the USRA produced most loco classes in a Light or Heavy versions. One difference is the size & mass of the engine. The OP may be trying to find if the Nscale Kato model represents anything that ran on UP. It is possible that the UP ran short passenger trains on branchlines in the praries.

UP had 52 Alcos, 133 Baldwins and 26 Lima Pacifics. Here's a page with total breakdowns by type: http://www.steamlocomotive.com/pacific/?page=up#photos
photo: http://www.steamlocomotive.com/pacific/up3206-smith.jpg
photo of streamlined "Forty-niner" http://www.jitterbuzz.com/stream.html#forty (about half way down the page)
photo: http://www.yesteryeardepot.com/UP3114.JPG
Classes P-1 through P-6 were classed as Light Pacific; classes P-7 through P-13 were classed as Heavy Pacific

Photos of heavy pacifics *not UP: http://forums.auran.com/trainz/showthread.php?p=655672 about halfway down the page