The narrow-gauge railway of KSM-2 factory is located in Tver, Russia. The railway was opened in 1951, and has a total length of 9 kilometres (5.6 mi), its track gauge is 750 mm (2 ft 5+1⁄2 in). It is used for the transportation of sand from the "Red Quarry" to the KSM-2 factory.

The Tver plant of building materials No.2 located near the town of Tver. The first section of the 3 kilometres (1.9 mi) long railway was built in 1951. The main task of the narrow-gauge railway is the transportation of sand from the quarry to the KSM-2 factory. It runs on a daily basis, the speed of the train is 35–40 km/h (22–25 mph), the total length of the railway is 9 kilometres (5.6 mi).

• TU7 – No. 1231, 1703, 3155, 3215
• TU6A – No. 0635
• TU6D – No. 0037
• TU8P – No. 0001

• Side-tipping wagons
• Snow blower – TU6D

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  Locomotive TU7-1231 with freight train
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  Locomotive TU7-1231 with freight train
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  Locomotive TU6D-0037
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  Locomotive TU7-1703 with freight train
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  Locomotive TU7-1703 with freight train
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  Electric locomotive K14m-091 with freight train

• Narrow-gauge railways in Russia

Wikimedia Commons has media related to Narrow gauge railway of KSM-2 factory.

• Official Website (in Russian)
• «The site of the railroad» S. Bolashenko (in Russian)
• Photo - project «Steam Engine» (in Russian)