By the way, the head and body should be burned separately.
That is a very good point! I was being careless. And the separate remains should be in placed in separate airtight containers and buried at least 200 feet down in an abandoned mine shaft with several feet of solid concrete both under and above the containers which should be at least 20 miles from one another. Or for even more safety this would be hundreds under of feet under of granite under the bottom of the ocean under several thousand feet of water.