EAU CLAIRE -- Two people are facing charges after an explosion at an alleged methamphetamine lab injured them and an eleven-year-old boy.  The explosion happened early Sunday morning on the 62-hundred block of Apple Street in Eau Claire.  Berrien County Sheriff's deputies say all three victims suffered a variety of chemical burns.  Prosecutors are expected to charge two people with operating a meth lab in the presence of a minor, child neglect and maintaining a drug house.  The boy is now in protective custody with a family members.