The nearly 100-year-old Old Nursing School Building Methodist Hospital in Des Moines, Iowa building was imploded on Sunday.
The implosion began at about 7 a.m., and lasted about 18 seconds. The cloud of dust kicked up by the implosion lasted for about 20 minutes after.
The now demolished building used to house the Iowa Methodist School of Nursing. The last class of nurses graduated from the school in 1999.
After the school closed, the building was used mostly for office space, said Amy Varcoe, spokeswoman for UnityPoint Health.
The building was demolished to make room for UnityPoint Health to expand its emergency services and critical care facilities, Varcoe said.
Cancer patient Joey Mausser pushed the button after his parents bid on the opportunity at a recent charity gala.
DW Zinser Company was the demolition contractor, Dykon Explosive Demolition Corporation was the implosion contractor.