Mason County PUD No. 3 has set days and times for the public to tour the Johns Prairie operations center in Shelton. Tours are scheduled for Monday June 25 at 2:00 PM and 6:30 PM; Wednesday June 27 at 2:00 PM and 6:30 PM; and Friday June 29 at 10:00 AM. Tour groups will be limited in size so that participants may have the time to better hear presentations and ask questions of their guides. Tours will include the warehouse and shop buildings and the administrative complex. Those interested in the tours need to reserve their spot by calling 360-426-8255, extension 5206. The Johns Prairie Operations Center is the site for the PUD 3 warehouse; field operations such as Shelton line workers; vehicle maintenance, repair and fueling; engineering, telecommunications, the meter shop, transformer and substation maintenance; and various administrative functions.