I tuned into this thread again to see how the BA fire boxes were going... seems there is no shortage of smoke or fire and that these units are probably the worst miners ever made. Lucky that you were home and awake when the units caught fire, could have been a terrible story otherwise.
Please note that the materials used to build these miners are fire resistant. The worst they can do is melt, which is what is show in the pictures above.
This is a really ignorant thing to say. There's plenty of proof of units literally going up in flames.