Their activity makes plutonium particles available for redistribution by wind, rain, traffic, animal, human and other forces (for references and more detail, see ???Science compromised,??? at <a href="http://www.rockyflatsnuclearguardianship.org/leroy-moores-blog/papers-by-leroy-moore-phd-2/">http://www.rockyflatsnuclearguardianship.org/leroy-moores-blog/papers-by-leroy-moore-phd-2/</a> ).