The cache is so big that the Oklahoman quoted one of the officials on the scene as estimating a full 24 hours would be required to cart away all of the material.How could it be possible that the roommate did not know?
Makes no sense at all.
Unless they were living in rather more spacious quarters than most college kids are accustomed to, how would it be possible not to know what his roommate was doing, and accumulating.
And wouldn't all that stuff smell pretty bad? I wouldn't want to live in a room with all those explosives/chemicals, and I think I'd notice!
"The cache is so big that the Oklahoman quoted one of the officials on the scene as estimating a full 24 hours would be required to cart away all of the material."
Add to that the fact that the substance involved gives off an acrid smell.