CNN Forensic Files March 15, 2015 05:18:00
They remembered that janice dodson's clothes had been covered in mud on the day of her husband's murder. janice's muddied clothing had been kept in evidence for the past three years. jacqueline battle scraped some of the mud from the clothing and ground it to a fine powder. battle sifted and weighed the samples. and then examined them under a polarizing microscope. the mud from janise's clothing contained bentonite. >> bentonite is a clay-like material comprised of minerals of aluminum silicates, magnesium and iron oxides. ranchers would add bentonite as a sealant so that the water would be re...