Why would that 'terrify' you, out of interest? - ed : are you thinking that microbes and germs and whatnot might lie there dormant until they're dug up again,

Why would that 'terrify' you, out of interest? - ed : are you thinking that microbes and germs and whatnot might lie there dormant until they're dug up again, unleashing some plague on unsuspecting descendants? If so, I imagine the chemicals leeching from the plastic will kill or retard their essential survival/replicative mechanisms...