Abstract: At 1:15 a.m. on March 16, 2016, Employee #1 was inside a 600,000 bushel, 80' diameter concrete McPherson grain bin using a pole/rod to unclog soybean pods/debris in a sub-floor auger opening (Hutchinson/Mayrath 12" Commercial Horizontal Bin Unloader, Leeson electric auger motor - Model #C256t17FB6C) while the auger was running. A lifeline safety rope worn by Employee #1 became entangled in the floor auger causing fatal strangulation injuries from his harness. Employee #1 was working alone inside the bin, while employee #2 was observing from outside the bin manhole side entry. The bin floor had unguarded sump holes to allow the grain to flow into the subfloor auger. The subfloor auger was not de-energized/locked out before Employee #1 entered and unguarded the blades of the subfloor auger. Additional hazards include the 50,000 to 60,000 bushels of soybeans remaining in the bin that were flowing towards the floor openings, poor visibility, and potential atmospheric hazards. Employee #1 died from asphyxia by ligature strangulation from the Sala harness Lifeline rope entangled in the sub-floor auger, which caused extreme pressure against the employee's neck/upper body resulting in asphyxiation by his harness.