Final Picher Mining Subsidence Evaluation report Jan. 32, 2006 Exhibits disc
 

Many sources state that the school buildings at Picher are undermined.  This aerial (enhanced) photo shows clearly that they are on solid ground.  Southwest of the baseball field behind the high school there was a mine that caved in. (shown in purple)  South of the football stadium and southeast of the grade school building there is some undermining. (shown in tan)