Unique show with snow blowers of the SBB from 5 generations, at the industrial plant Biel on the occasion of the celebration for 175 years of Swiss Railways. All 5 machines turn their blower wheels! At the IW Biel, the maintenance, repairs, revisions or rebuilds of the blowers are made. From left to right: 800 HP steam snow blower Xrot # 100, built by Henschel in 1896 for the Gotthard Railway. Three-axle 900 HP diesel snow blower Xrotm # 98, built in 1967 by SLM Winterthur. Four-axle diesel snow blower Xrotm # 98, built by Beilhack/Rosenheim/Germany in 1982 with 1000 hp. Small 200 hp diesel snow blower XTm # 109 (XTm 491 # 109) built in 1968 by Aebi. Xrotm 491 # 111 rebuilt 2020/2021 at IW Biel from Tm III/Tm 232.