Emergency Information

Sun, 30 Aug 2026 22:16:08 -0400

Appropriate decontamination protocols have now been completed in the lab space of the student who reported attempting the synthesis of dimethyl mercury. Given the actions we have taken and the information received, as well as consultations with industrial hygienists, medical experts at MIT Health, and outside experts, it is our assessment that it is now safe to reopen Building 18. The building will reopen at 6 a.m. tomorrow, Monday, August 31.

Decontamination of the sealed suite in the impacted residence hall has also been successfully completed. The residence hall, which was never closed, remains open.

MIT Emergency Site

Emergency Information