Jim Cavagnaro (right) Cary Medical Center manager of facilities, explains the operation of the hospital’s newly converted boilers to Doug Plourde of the Caribou Hospital District Board. On Dec. 20, Cary marked its official changeover to compressed natural gas as its major fuel source. Part of the process was the conversion of its four primary boilers for use with both gas and fuel oil. (From the Bangor Daily News)

Jim Cavagnaro (right) Cary Medical Center manager of facilities, explains the operation of the hospital’s newly converted boilers to Doug Plourde of the Caribou Hospital District Board. On Dec. 20, Cary marked its official changeover to compressed natural gas as its major fuel source. Part of the process was the conversion of its four primary boilers for use with both gas and fuel oil. (From the Bangor Daily News)