Thanks! That was an interesting look at things - it's nice to know about the historical and sociological background of things. Seeing a similar account from a frequentist perspective would be nice, as this was quite one-sided, but I don't know which book should be summarized for that.

and discovered that accident rates had plummeted suddenly in the early 1890s. An historian suggested why: in 1989, the miners had formed a safety coalition.

I think one of these years is wrong.