HUNTER VALLEY OPERATIONS Hunter Valley Operations has in place a 24 hour Complaints and Blasting Information Hotline. 1800 888 733 This free call service allows you to listen to daily blasting information or leave an environmental complaint where one of our staff will respond to your call. More information about Hunter Valley Operations can be found on our website www.hvo.com.au AW3428766 HUNTER VALLEY OPERATIONS Hunter Valley Operations has in place a 24 hour Complaints and Blasting Information Hotline . 1800 888 733 This free call service allows you to listen to daily blasting information or leave an environmental complaint where one of our staff will respond to your call . More information about Hunter Valley Operations can be found on our website www.hvo.com.au AW3428766