In the first two to three years following the medical use of X-rays and radium, there was almost a complete lack of radiation protection, due to an ignorance of the hazards involved. However, when the injurious effects started to become apparent, as in [3.33], described in 1904 as a Röntgen light burn of the second degree \ some national attempts began to be made in some, but not all countries. For example, the Röntgen Society’s proposals in 1898 for a Committee on X-ray Injuries has already been described in Chapter 3, and in America in 1903 a Protection Committee was proposed within the American Roentgen Ray Society by S. H. Monell. Table 23.1 lists some of the other milestones in the development of radiation protection standards^’ ^ over the 50-year period between the adoption of an international radium standard and the publication of the first ICRP report. Later milestones include the publications of several other ICRP reports, such as IC R P Report 26 ^ in 1977, and the establishment of SI units in radiological medicine^ in the mid-1970s.