Bubble Technology Industries

This is a nice writeup about BTI company (http://www.bubbletech.ca/) which began in April 1988 a startup that spun out of AECL: http://ontarioeast.ca/content/radiation-detection-specialist-firm-nestles-down-ontario-east ... "In the 1980s, Harry Ing was looking for more effective ways to measure radiation dose from potentially harzardous radiation particles called neutrons. He developed a device called the bubble detector, which used bubbles trapped inside a gel to take a quantitative measurement of neutron radiation exposure.
The company has grown steadily over the last two decades and now offers a wide range of radiation and explosives detection technologies to clients. It also performs cutting-edge contract research with its team of scientists, engineers, and support staff."