Bobblehead - Explosives

 is a Fallout 3 item, a Vault Boy Bobblehead. It permanently improves your character's Explosives skill by 10, to a maximum of 100.

Location
In the Sealed Cistern near WKML Broadcast Station. The manhole is tucked into the rocks behind the station (see picture on the right). To find out the precise location, click the video link in the bottom of the main page Vault Boy Bobblehead.