Irradiation, a relatively simple process that has been known and studied for 40 years, does not actually make foods radioactive or leave a radioactive residue.

Of those, 250 people, some with radioactive residue still on their skin, were found, through the use of Geiger counters, to be contaminated.

The process left all manner of radioactive residue above and in the ground.

The immediate issue was pollution by strontium 90 (airborne radioactive residue from nuclear bomb tests) of the milk we gave our babies.

Tom finally organized a procedure to draw off the radioactive residue safely from the booth after the reaction had cooled.

An interplanetary war would have left a great amount of radioactive residue; but the instruments showed only normal background radiation.

That may solve the immediate problem of what to do with Shoreham's radioactive residue.

Today, seven years later, the radioactive residue is reported to be about 1.8 million curies.

The blast might cause injuries or deaths, but the radioactive residue would cover a two- to three-block area and not pose an immediate health threat.

In the 1980's, the water tower holding radioactive residue was demolished.