SYMBOLS UNITS AND EQUIVALENTS UNITS OF RADIOACTIVITY Ci os es Curie ee 8s ce oe oe te oe oe 307 X 102° disintegrations per second mCi es e- Millicurie .. .. 1077 Curies pei e+ es picocurie .. .. 10712 Curies .. 1. 2.22 disintegrations per minute UNITS OF LENGTH, ARKBA, VOLUME AND MASS AND THEIR EQUIVALENTS IN THE IMPERIAL SYSTEM CMjee 2 ae ce 0 oe km .. oe eo oe os oe M“ ese o6 «2 0 08 ef litre .. «2 oe os oe Boe ce oe oe ce oe centimetre .. 2. «+ e«« 0.394 inches square kilometre .. .. 0.386 square miles cubic metre... .. .. Litre «. 35.31 cubic feet we oe ae oe oe 0.880 quart BLAM oe oe oe oe we oe 0.0353 Ounce NOTES i. Unless otherwise noted, all times given in this report are New Zealand Standard time i.e. G.M.T, + ‘12 hours, Radioactive fallout in rain is expressed aa: 2 (a) Deposition - millicuries per square kilometre (mCi/kw ) (b} Concentration - picocuries per litre Concentration (pCi/litre) = (pci/litre) deposition (mCi/km* ) rainfall (cm) x 100 Multiply mC/om* by 2.59 to obtain mCi/sq. mile. 36 The levels of strontium-90 contamination in food and bone are given in "Strontium Units" of calcium wc cece rec i.e. picocuries strontium-90 per grem ereceeensensaceseasesecscsesevee Pol sr /e Ca. Similarly c&esium-137 results are given as picocuries of cagetum13? per gram of POTASSIUM. .oesasnccsecsccsnccesccevessse pol One litre of whole milk contains approximately: 1.2 g of calciun 1.4 g¢ of potassium. III - 15 Csl *16 K.