Assertion: thorium | /r/HasProperty | single large 75 kg
Facets:
Source sentences:
text: The assumption was that the thorium content of the parts was 1.7%, that the thorium was ten years old, that there was a single large (75 kg) casting and ten smaller castings (1.6 kg each), that the worker was an average of 0.5 meters away from these parts, and that this exposure was for 40 hours per year with an additional exposure of 1000 hours per year to the ten small castings only.