What year did we stop making steam engines?
or:What year did we stop making steam engines?or:Steam locomotives were gradually phased out from the 1950s to the 1970s.They are more expensive to o
or:What year did we stop making steam engines?
or:Steam locomotives were gradually phased out from the 1950s to the 1970s.They are more expensive to operate because their thermodynamic efficiency is very low, and they need a long time to heat up, clean, resupply and maintain, which is unproductive because they are not available for trains, but needs staff to work too.
