The steel mill in a partially occupied region of Ukraine is a dystopian maze of flames, chutes and tentacled pipes, vast enough to be a small city. Thunderous blazes of sparks flash above the open furnaces where workers smelt iron ore into streams of molten metal day and night.

The construction industry faces potential financial strain and material price increases due to new tariffs on steel and aluminum imports, even as some experts foresee long-term benefits for domestic production.