White powders found at known or potential crime scenes present investigators and first responders with a dilemma. Touching the powders could be dangerous or compromise the evidence, and sending samples to a lab to be identified could take too long.
White powders found at known or potential crime scenes present investigators and first responders with a dilemma. Touching the powders could be dangerous or compromise the evidence, and sending samples to a lab to be identified could take too long.