The fourth volume of the TRC's final report, dedicated to missing children and unmarked burials, was developed after the original TRC members realized, in 2007, that the issue required its own working group. In 2009, the TRC requested $1.5 million in extra funding from the federal government to complete this work, but was denied.[6] The researchers concluded, after searching land near schools using satellite imagery and maps, that, "for the most part, the cemeteries that the Commission documented are abandoned, disused, and vulnerable to accidental disturbance".[55]:1