Sounds like it's not this actually, and it is a rocket engine; the Guardian has some other quotes on this: https://www.theguardian.com/world/2019/aug/10/russi

Sounds like it's not this actually, and it is a rocket engine; the Guardian has some other quotes on this: https://www.theguardian.com/world/2019/aug/10/russian-nuclear-agency-confirms-role-in-rocket-test-explosion https://www.theguardian.com/world/2019/aug/10/russian-nuclea...