Manhattan Project National Historical Park, Part I: B Reactor » 6_1_DSCF1996_v1
Top of the pile at B Reactor, with discharge side to the right. Winches high above control the vertical safety rods (VSRs), now fully inserted into the pile. Around each VSR penetration are hoppers filled with boron carbide balls as a last resort for shutting down the reactor.
Top of the pile at B Reactor, with vertical safety rod systems visible.
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