In the U.K. ones you reference there’s the report on the Nunnery Colliery accident of 1923.
In researching my family tree I came across the report and one of the names mentioned in the report is “a twig” in the tree.
Interesting is the fact that Nunnery was on the Silkstone seam which indicates how far these coal seams actually run.
Some good reading about “linked pits” here
https://en.m.wikipedia.org/wiki/Coal...hire_Coalfield

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