Photo By: Kevin Morgan
 

NS 3641 has just passed by the hotbox detector at MP 22.6. The detector is now counting axles and looking for abnormal heat signature that might indicate a manual brake that has been applied on the train. No such heat signature would be detected today.
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Monday, August 11, 2025 at 5:00:52 PM
image date


Location Information
City or County and State
Arvada, CO

Subdivision
Moffat Tunnel (UP)

Milepost or Control Point
Detector (MP 22.6)



Train Information
Railroad
NS, BNSF 		Model
ET44AC 		Primary Unit Number
NS 3641

Paint Scheme
NS Standard 		Symbol
Train Type
Unit Oil



Photo Information
Camera Make/Model
Hasselblad / Mavic 3 / Mavic 3 Pro [L2D-20c] 		ISO
130
Flash
Did Not Fire

Focal Length
24 mm 		Shutter
1/1600 seconds 		Aperture
f/2.8

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