HIGASHI-NARUSE, Akita Prefecture—Two green bulldozers smoothly spread a mixture of pebble and cement at the construction site of a mountainous dam, followed by four vibratory rollers that compacted the fresh layer into place.

HIGASHI-NARUSE, Akita Prefecture—Two green bulldozers smoothly spread a mixture of pebble and cement at the construction site of a mountainous dam, followed by four vibratory rollers that compacted the fresh layer into place.