In it, they singled out two foremen, saying they repeatedly failed to clean conveyor belts or apply rock dust used to neutralize explosive coal dust, all leading to unsafe conditions.

在其中，他们挑出了两名工头，称他们多次未能清洁传送带或应用用于中和爆炸性煤尘的岩粉，所有这些都导致不安全的情况。