3M product brochure: https://multimedia.3m.com/mws/media/1226911O/glass-bubbles-for-mining-brochure.pdf https://multimedia.3m.com/mws/media/1226911O/glass-bubbl

3M product brochure: https://multimedia.3m.com/mws/media/1226911O/glass-bubbles-for-mining-brochure.pdf https://multimedia.3m.com/mws/media/1226911O/glass-bubbles-f... See page 64: https://www.austinpowder.com/wp-content/uploads/2019/01/The-Complete-Blasters-Guide.pdf https://www.austinpowder.com/wp-content/uploads/2019/01/The-... Not explosive in and of themselves, but a component in modern industrial explosives. As a sensitizer and a density modifier.