The Main Hall was destroyed by Fire on Sunday March 7th, 1971.

Firemen fight to get the fire under control. Afterwards the main hall site remained derelict for over ten years until the Phoenix centre was opened in 1985. Most patients activities continued to take place in The annexe hall.
                                   The following account appeared in the Chester Chronicle:-
Fire experts may never know what started the fire at the Deva hospital which caused thousands of pounds of damage. The fire, which wrecked the main recreational hall, could have been triggered by an electrical fault, or a carelessly dropped cigarette end. Arson was ruled out......... The fire started last Sunday afternoon while 20 patients were inside the hall. Smoke began billowing from behind the hall's stage curtains and a fire quickly developed before anyone could halt it........ Fifty firemen from five brigades took one and a half hours to bring the blaze under control........The blaze burned through lines linking 260 telephone extensions throughout the hospital. In a crash repair programme Post office engineers connected hundreds of yards of new cable and worked throughout Sunday night reconnecting telephones. All extensions had been connected by Tuesday afternoon.
The charred remains of the Main Hall.
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