December 6 is Miner’s Day in the United States commemorating the 1907 Monongh Mining Disaster in which 362 employees of the Fairmont Coal Company lost their lives in an explosion in Monongah, West Virginia.
The same day ten years later a French cargo ship laden with munitions collided with a Norwegian vessel in the Narrows near Halifax, Nova Scotia, Canada killing 1,900 and injuring and 9,000.
On December 6, 1957 the Vanguard TV3 exploded on its launch pad in Cape Canaveral, Florida.
On December 6, 1997 a Russian cargo planed crashed into an apartment complex near Irdutsk, Siberia, killing 67.
And on December 6, 2005, an Iranian Air Force C-130 military transport crashed into the 10th floor of a Tehran apartment building, killing all 84 on board and 44 more on the ground.