BS Affiliate KMOV TV, St. Louis, Cites the Effectiveness of Highfield's FieldGuard Ammonia Tank Lock
BS Affiliate KMOV TV, St. Louis, references the effectiveness of Highfield's FieldGuard Ammonia Tank Lock in preventing theft of anhydrous ammonia, used to make methamphetamines. In the investigative report, Fighting Meth, a manager at a farm supply distributorship outside St. Louis says "the locks have been a savior for us."
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