Replicable cold fusion experiment: heat/helium ratio

Cold fusion effects have often been called 'unreliable', even by those convinced of their reality. The chaotic nature of material conditions, so far, has made ordinary reliability elusive. However, the Fleischmann-Pons experiment produces more than one effect, and two major ones are heat and helium. Miles, in 1991, measured both, and found that they were correlated, within an order of magnitude of the ratio expected from deuterium fusion. Miles was amply confirmed, and precision has increased. While there are outliers, there is no experimental evidence contradicting the correlation, and only the exact ratio remains in question. In this, we have direct evidence that the effect is real and is nuclear in nature; the mechanism remains a mystery well worth exploration.