CHICAGO DAILY TRIBUNE, Aug. 27, 1926

• Clymer PA No. 1 (Sample Run) coal mining disaster
• Indiana County, Pennsylvania coal-dust explosions

The front page has a five column heading: "40 Entombed by Explosion in Mine" with subheads. (see images) 
Complete with all 34 pages, light toning and a little wear at the margins, generally in good condition.

Background: The August 26, 1926 disaster at the Clymer No. 1 (Sample Run) Mine stands out as one of the deadliest coal mining tragedies in Indiana County, Pennsylvania, distinguished by its catastrophic double-explosion mechanism and an uncanny stroke of fortune that narrowly prevented a far greater loss of life. Triggered around 1:00 p.m. when accumulated methane gas—likely ignited by an electrical arc—swept through the mine and set off a devastating secondary coal-dust blast, the sheer kinetic force blew heavy fanway doors off their hinges a mile away and hurled a geyser of flame and soot over 100 feet into the air. What makes the tragedy uniquely notable in regional mining history is the severe disproportion between its destructive scale and its final death toll: while the mine typically housed a workforce of 400 to 500 men, a rare shift to a partial "slack time" schedule meant only 62 miners were underground at the moment of detonation. Though 44 men tragically perished—27 directly from the blast and 17 from toxic carbon monoxide "afterdamp"—18 managed to survive or escape the inferno, leaving the disaster a stark historical marker remembered today by local memorials and clustered gravestones in nearby Sample Run Hill cemeteries.