Garmaine Staff asked 2 years ago

I know that Orbital ATK builds solid rocket boosters, but where do they get the bulk material from? Is there a single supplier or multiple suppliers of solid rocket fuel or do motor manufacturers generally source the bulk fuel themselves from raw material suppliers?

What about other solid rocket motor manufacturing, where do they source their fuel?

I would be interested in how the motor manufacturer also performs quality assurance on the material as well.