We need 5 people to sign up to help with casting another Mk IIb fuel grain on Saturday from 3:30pm-4:30pm in the lab. Sign up if you want to help below: https://docs.google.com/spreadsheets/d/1A5z4jjMtR4wCg6bdBQH9atZVI7E2vo5A3VUvrRmYBHA/edit#gid=734737912