THE presence of long-lived radioisotopes, for example strontium-90 and cæsium-137, in fall-out material and their detection in soil, vegetation and animal products have been confirmed 1.

Scientists and mothers in St. Louis, who launched the ambitious project to measure Strontium 90 in baby teeth, uncovered the disturbing environmental consequences of nuclear arms testing.

A PREVIOUS report 1 summarized strontium-90 data obtained on ten young adult volunteers studied on a metabolic ward on a constant diet containing approximately 1.1 g of calcium and 13.4 µµC.