Historical mining incidents have often resulted in significant loss of life and raised concerns about worker safety. One of the most notable events was the Upper Big Branch Mine disaster in 2010, where an explosion killed 29 miners in West Virginia. This tragedy highlighted the dangers of coal mining and led to increased scrutiny of safety regulations. Another major incident occurred in 1906 at the San Francisco Earthquake, which caused a massive landslide in the Sierra Nevada region, trapping miners. Such events have prompted reforms in mining practices and regulations to protect workers and prevent future disasters.