Sunday, December 20th
On this date in 1888, work was begun on a bridge across the Colorado River at Needles.
On this date in 1914, it rained in Phoenix for 72 consecutive hours, causing the reservoir behind Roosevelt Dam to gain 40,000 acre-feet in one day.
On this date in 1925, 1,200 boxes of dynamite exploded at the United Verde Copper mine causing $20,000 damage to walls and window glass in Jerome.
On this date in 1929, the town of Miami discovered it would need heavier manhole covers when the Arizona Road Department’s electric magnet was put to work picking up nails and metal scraps from the city’s streets. The machine picked up all the manhole covers along its route.