appearance confined display displayed engines equipment heavy heavy-duty historical history locomotives machinery machines mobility power powerful rails railway railway-yard restoration restoration-yard restored steam-engines steam-locomotives steam-trains strength trains transportation abstract arrows background binary blue blueprint brochure cogs computerized copyspace design digital digits direction engineering gears high-tech illustration industrial industry mechanical mechanics modern motion report cover structure technical technology template wheels work danger dangerous electricity external filling-in on-high perspectives power-pole repair-crew replaced replacement replacing risks risky safety service shovel shoveling shovelling stabilising stabilizing trucks up-high vehicles workman