Others (e.g., Attending, Examining or Family Physicians, Specialists in Nuclear Medicine and Radiation Effects, etc.): Nos. +, 2,3 5, 9, 10, ti, 12, 13, 14,15, 18, 19, 21, 22, 23, 24, 26, 29,31, 32, 34, 35, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 50. Non-Medical Geophysicist: No. 49. Health Physicist: Nos. |, 33, 43. Nuclear Effects Director: No. 41. Radiological Health Officer: No. 44. Radiological Physicist: No. 35. Radiological Specialist: Nos. 26, 40. Uranium Miner Lung Cancer Specialists:' Nos. 51, 52, 53, 54, 55. "See also Summary Digest of 14 Additional Uranium Miner Lung Cancer Cases, Page 177, GLOSSARY OF NUCLEAR TERMS REFERRED TO IN CASE DIGESTS . Alpha radiation~A stream of positively charged alpha particles emitted by certain radioactive materials. It is the least penetrating of the three common types of radiation (alpha, beta, gamma). Alpha particles cannot penetrate the outer layers of human skin but if an element releasing them is deposited within the body, they may cause damage by destroying focal tissue, . Beta radiation- A stream of negatively or positively charged particles emitted from the nucleus of certain radioactive materials. . Curie—(Symbols commonly used are C, c, and Ci)—The basic unit to describe the intensity of radioactivity in a sample of material. The curie is equal to 37 billion disintegrations per second, which is approximately the radioactivity of ! gram of radium. A curie is also a quantity of any nuclide having {| curie of radioactivity. . Dose—The amount of ionizing radiation energy absorbed per unit mass of irradiated material at a specific location, such as a part of the human body. . Dosimeter—A device that measures radiation dose, such as a film badge. . Fallout--Debris (radioactive material} that resettles to earth after a nuclear explosion. . Film badge—A package of photographic film worn like a badge by workers in the nuclear industry to measure exposure to ionizing radiation. The absorbed dose can be calculated by the degree of film darkening caused by the irradiation. . Fission Products—The nuclei formed by the fission of heavy elements, plus the nuclides formed by the fission fragments’ radioactive decay. . Gamma_Radiation—High-energy, short wavelength electromagnetic radiation emitted from the nuclei of many radioactive materials. Gamma radiation is very penetrating and is best shielded against by dense | materials, such as concrete or lead. 1}