J. Condensed Matter Nucl. Sci. 19 (2016) 173–182 Research Article LENR Anomalies in Pd–H2 Systems Submitted to Laser Stimulation Ubaldo Mastromatteo A.R.G.A.L. Via S. Stefano, 27 – 20010 Bareggio (MI), Italy Abstract In a continuation of the research started in the late 1990s at the University of Lecce, and then repeated in 2004, recently in the second half of 2014 in the A.R.G.A.L. lab., it was decided to thoroughly investigate the LENR anomalies of Pd–H2 system (in gaseous environment), having as reference the preparation techniques and surface analysis used in the microelectronics industry, to demonstrate convincingly that material contamination...