UtahShotgunner from AR15.com posted photos from Finnish Wartime Photograph Archive run by Finnish Defense Force.
He picked out the factory floor photos and posted in this thread
http://www.ar15.com/forums/t_1_5/1743045_So__how_did_they_make_Mosin_s_and_Suomi_s____This_is_how____Pic_heavy_.html
From: AR15.com