Wikipedia

"The GBU-57 series MOP (Massive Ordnance Penetrator) is a 30,000-pound (13,600 kg)-class precision-guided "bunker buster" bomb developed for the United States Air Force (USAF)...It is much larger than earlier USAF weapons designed to destroy heavily fortified, deep underground bunkers such as the 5,000-pound (2,300 kg) GBU-28 and GBU-37"

Nuclear testing at Bikini Atoll consisted of the detonation of 23 (or 24) nuclear weapons by the United States between 1946 and 1958 on Bikini Atoll in the Marshall Islands. Tests occurred at 7 test sites on the reef itself, on the sea, in the air, and underwater. The test weapons produced a combined yield of about 77–78.6 Mt of TNT in explosive power.

Authorities had promised the Bikini Atoll's residents that they would be able to return home after the nuclear tests. A majority of the island's family heads agreed to leave the island, and most of the residents were moved to the Rongerik Atoll and later to Kili Island. Both locations proved unsuitable to sustaining life, and the United States provides residents with on-going aid. Despite the promises made by authorities, these and further nuclear tests (Redwing in 1956 and Hardtack in 1958) rendered Bikini unfit for habitation, contaminating the soil and water, making subsistence farming and fishing too dangerous.

The female population of the Marshall Islands have a sixty times greater cervical cancer mortality than a comparable mainland United States population. The Islands populations also have a five times greater likelihood of breast or gastrointestinal mortality, and lung cancer mortality is three times higher than the mainland population. The male population on the Marshall Islands' lung cancer mortality is four times greater than the overall United States rates, and the oral cancer rates are ten times greater.

I watched a documentary on it some years back, it's fascinating and horrifying how cavalier these tests were.

Mechanical television or mechanical scan television is an obsolete television system that relies on a mechanical scanning device, such as a rotating disk with holes in it or a rotating mirror drum, to scan the scene and generate the video signal, and a similar mechanical device at the receiver to display the picture.

Mechanical scanning methods were used in the earliest experimental television systems in the 1920s and 1930s.

In the U.S., experimental stations such as W2XAB in New York City began broadcasting mechanical television programs in 1931 but discontinued operations on February 20, 1933, until returning with an all-electronic system in 1939.

The article doesn't do much to give an idea of what mechanical television was really like but you can see something similar in action here.

The Great Molasses Flood, also known as the Boston Molasses Disaster was a disaster that occurred on Wednesday, January 15, 1919, in the North End neighborhood of Boston, Massachusetts.

A large storage tank filled with 2.3 million U.S. gallons (8,700 cubic meters) 13,000 short tons (12,000 metric tons) burst, and the resultant wave of molasses rushed through the streets at an estimated 35 miles per hour (56 kilometers per hour), killing 21 people and injuring 150. The event entered local folklore and residents reported for decades afterwards that the area still smelled of molasses on hot summer days.