A plan to sabotage a railroad being built uses iron pyrites to get the workers to quit the construction.
 Original Air Date: June 09, 1943
 Host: Andrew Rhynes
 Show: The Lone Ranger
 Phone: (707) 98 OTRDW (6-8739)
  
 Stars:
 • Brace Beemer (Lone Ranger)
 • John Todd (Tonto)
 Writer:
 • Fran Striker
 Producer:
 • George W. Trendle
 Music:
 • Ben Bonnell