A contractor used more than 1,000 lbs. of explosives on March 3 to demolish the Navajo Generating Station's three 245-ft.-tall boilers.

The coal-fired power plant near the Arizona-Utah border shut down in 2019 and three 775-ft. concrete stacks were imploded in December.

The boiler demolition was part of Salt River Project's continuing decommissioning of the nearly 50-year-old coal-fired power plant near the Arizona-Utah border.

SRP officials said each of the massive 20,000-ton boilers and support structures rolled to the ground east of the power plant in just 10 seconds following detonation.

Once the boiler debris is cleared away, next to be demolished will be the plant's three-unit turbine block where electricity was made.

The owners of the generation station decided to close the 2,250-megawatt plant as natural gas became a cheaper source of energy.

The plant once provided electricity to Arizona, Nevada and California, but its customer base dwindled as states decided against using coal-fired power.

The plant also provided electricity to send Colorado River water through a series of canals to Arizona's major metropolitan areas.

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