Comment on "Compositional and Microchemical Evidence of Piezonuclear   Fission Reactions in Rock Specimens Subjected to Compression Tests" [Strain   47 (Suppl. 2), 282 (2011)]
  It is shown that the chemical composition data published by Carpinteri et al. in the article "Compositional and Microchemical Evidence of Piezonuclear Fission Reactions in Rock Specimens Subjected to Compression Tests" [Strain 47 (Suppl. 2), 282 (2011)] cannot be the result of independent measurements as claimed by the authors. Therefore, no conclusion can be drawn from them about compositional modifications induced in the stone by hypothetical piezonuclear reactions taking place during catastrophic failure of the material at fracture. 
G. Amato, G. Bertotti, O. Bottauscio, G. Crotti, F. Fiorillo, G. Mana,   M. L. Rastello, P. Tavella, and F. Vinai
cond-mat.mtrl-sci physics.geo-ph