I have heard the figure 290 quoted as the number of miners killed.
In 1895 there was a major collapse that killed 13 miners.
The explosion killed five miners and left three others injured.
They said conditions in the mines were killing too many miners.
A memorial dedicated to the families of the 1,500 miners killed in the area is currently being considered.
On 18 June 1835 a gas explosion in one of the tunnels killed 102 miners.
The deputies had spent most of the morning joking about how many miners they would kill.
An explosion in the mine followed by flooding killed 372 miners.
In total the explosions killed 361 miners and 27 rescuers.
The only death related to this incident was of a white miner killed by police trying to break up the disturbance.
