The JCMB plant room alarms went off late Friday night.  If anyone switched off 
any of the machine hall main switches over Friday night/Saturday morning as a
result could they make themselves known to John Dow (or at least send him an
anonymous note).  Also could anyone else who was in the JCMB between 11.30pm
Friday and 10.00am Saturday please get in touch with us?     Thanks.     JHB.