Mobile phone companies trialled technology by sending Victorians and Tasmanians three million SMS messages on behalf of Victoria Police. Wednesday, 4 March Cooler conditions and rain from 4–6 March enabled firefighters to control and contain several fires, with the Kilmore East – Murrindindi complex south fire being completely contained. Predictions for favourable weather signalled the easing of the threat to settlements from the major fires that had been burning since 7 February. Mid-March Favourable conditions aided containment efforts and extinguished many of the fires. Major fires Kinglake–Marysville fires The Kinglake fire complex was named after two earlier fires, the Kilmore East fire and the Murrindindi Mill fire, merged following the wind change on the evening of 7 February. The complex was the largest of the many fires burning on Black Saturday, ultimately destroying over . It was also the most destructive, with over 1,800 houses destroyed and 159 lives lost in the region. Kinglake area (Kilmore East fire) Just before midday on 7 February, high winds felled a section of power lines owned by SP AusNet in Kilmore East, sparking a fire at approximately 11:45 am in open grasslands that adjoined pine plantations. The fire was fanned by extreme northwesterly winds, and travelled southeast in a narrow fire front through Wandong and Clonbinane, into Kinglake National Park, and then onto the towns of Humevale, Kinglake West, Strathewen and St Andrews. The cool change passed through the area around 5:30 pm, bringing strong southwesterly winds. The wind change turned the initial long and narrow fire band into a wide firefront that moved in a northeast direction through Kinglake, Steels Creek, Dixons Creek, Chum Creek, Toolangi, Hazeldene, Broadford and Flowerdale. The area became the worst-impacted in the state, with a total of 120 deaths and more than 1,200 homes destroyed. The cause of the Kilmore East-Kinglake bushfire was found by the 2009 Victorian Bushfires Royal Commission to be an ageing SP AusNet power line. Class action In December 2014 Victoria's Supreme Court approved a settlement of a legal class action against SP AusNet and Utility Services Group. It has been noted as being "the biggest class action settlement in Australian legal history". The previous highest payout was $200 Million in Kirby v Centro Properties Limited (No 6) [2012] FCA 650 (19 June 2012). Marysville area (Murrindindi Mill fire) According to eyewitnesses, the Murrindindi Mill fire started at 2:55 pm, while Victoria Police