the present invention is an improved plastic industrial container which may be used for packaging , shipping and dispensing a variety of liquids while protecting the contents from tampering and theft . the container is manufactured in components which include a pail body , a cover and a nestable pour spout closure . the improved container design facilitates press fit assembly of the cover to the pail in the usual manner , but which blocks tool insertion and undamaged removal of the cover . the invention specifically relates to an improved cover and closure combination which facilitates the press fit assembly of the closure to the cover but which resists tampering . a molded cover sump and top plastic barrier wall closely surrounds the installed closure . the sump and barrier wall resist tampering by restricting the clearance for tool insertion and closure removal . the barrier wall is further molded in thin cross section with frangible elements to be easily damaged if tools are used in a prying manner on the closure . damage to the top barrier wall or container cover provides tamper evidence .