(Francisco Kjolseth | The Salt Lake Tribune) Utah’s Lila Canyon coal mine, on Tuesday, Dec. 6, has been burning since a coal pillar spontaneously combusted on Sept. 20. An aggressive drilling program is underway in an effort to extinguish the fire without wrecking the mine, which remains out of production indefinitely. Mine operators plan to inject a special foam into the mine through a series of 35 boreholes in hopes of sealing off the burning area before flooding it with water.