Originally Posted by Cross Creek

I'm an amateur, but I know enough to say that a tube cannot go "boom" unless part of it has escaped the confines of the tire/rim. Most likely, part of the tube was caught between the tire and rim, and the partially unseated bead allowed the trapped tube to inflate, then explode. The only fix I know is to take extra care when mounting tires that the tube is completely inside the tire, then inflate to 20 psi or so, go around the tire on both sides popping the bead into the rim, then add more air and do it again, then fully inflate to desired pressure. That's the way I do it on a wheel/tire combo I have that has a loose fit (easy to mount by hand).