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Here is a list of all 25 national monument declarations in Utah history

Thirteen presidents have used the Antiquities Act to establish or expand national monuments since 1908.

(Susan Walsh | AP) President Joe Biden signs proclamations on the North Lawn at the White House in Washington, Friday, Oct. 8, 2021, during an event announcing that his administration is restoring protections for two sprawling national monuments in Utah that have been at the center of a long-running public lands dispute, and a separate marine conservation area in New England that recently has been used for commercial fishing.

With President Joe Biden’s action to restore the original boundaries of the Bears Ears National Monument and Grand Staircase-Escalante National Monument, 13 U.S. presidents have now invoked the Antiquities Act of 1906 a total of 25 times to establish, expand or — in the case of President Donald Trump’s 2017 declaration, reduce — national monuments in Utah.

[Related: Biden returns 2 million acres to Bears Ears and Grand Staircase | What changes in Bears Ears and Grand Staircase-Escalante with Biden’s order?]

Some of the lands protected later became Zion National Park, Arches National Park, Bryce Canyon National Park and Capitol Reef National Park. Below is a list of all presidential proclamations under the Antiquities Act that have established or adjusted national monuments in Utah:

April 16, 1908 • Natural Bridges National Monument established by President Theodore Roosevelt (120 acres)

July 31, 1909 • Mukuntuweap National Monument (later Zion National Monument) established by President William Howard Taft (15,200 acres)

Sept. 25, 1909 • Natural Bridges NM expanded by Taft (2,740 acres)

May 30, 1910 • Rainbow Bridge National Monument established by Taft (160 acres)

Feb. 11, 1916 • Natural Bridges NM boundary expansion under Taft confirmed by President Woodrow Wilson (2,740 acres)

March 18, 1918 • Zion and Mukuntuweap monuments expanded by Wilson (61,600 acres)

Oct. 14, 1922 • Timpanogos Cave National Monument established by President Warren G. Harding (250 acres)

June 8, 1923 • Bryce Canyon National Monument established by Harding (7,440 acres)

April 12, 1929 • Arches National Monument established by President Herbert Hoover (4,520 acres)

Aug. 22, 1933 • Cedar Breaks National Monument established by President Franklin D. Roosevelt (5,701 acres)

Jan. 22, 1937 • Second Zion National Monument, the Kolob Section, established by Roosevelt (49,150 acres)

Aug. 2, 1937 • Capitol Reef National Monument established by Roosevelt (37,060 acres)

Nov. 25, 1938 • Arches National Monument expanded by Roosevelt (29,160 acres)

July 2, 1958 • Capitol Reef National Monument expanded by President Dwight D. Eisenhower (3,040 acres)

July 22, 1960 • Arches National Monument boundaries adjusted by Eisenhower, adding 480 acres and removing 720 acres of grazing land

March 27, 1962 • Timpanogos Cave National Monument boundaries confirmed by President John F. Kennedy

Aug. 14, 1962 • Natural Bridges National Monument boundaries adjusted by Kennedy, adding 5,236 acres and removing 320 acres

Jan. 20, 1969 • Arches National Monument expanded by President Lyndon B. Johnson (48,943 acres)

Jan. 20, 1969 • Capitol Reef National Monument expanded by Johnson (215,056)

Sept. 18, 1996 • Grand Staircase-Escalante National Monument established by President Bill Clinton (1,700,000 acres)

Dec. 28, 2016 • Bears Ears National Monument established by President Barack Obama (1,350,000 acres)

Dec. 4, 2017 • Bears Ears National Monument reduced by President Donald Trump to 228,784 acres

Dec. 4, 2017 • Grand Staircase-Escalante National Monument reduced by Trump to 1 million acres

Oct. 8, 2021 • Bears Ears National Monument restored by President Joe Biden to 1,360,000 acres

Oct. 8, 2021 • Grand Staircase-Escalante National Monument restored by Biden to 1,870,000 acres

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