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Torque, Preload, and Friction in Bolted Joints: What Every Mine Engineer Should Know Oct. 29, 2026 Torque, Preload, and Friction in Bolted Joints: What Every Mine Engineer Should Know explains bolt load calculations, friction effects, tightening methods, verification, and mining maintenance controls. -
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FB-39 Friction Bolt: When to Use the 39mm Rock Bolt in Tunneling Projects Aug. 27, 2026 When I evaluate an FB-39 Friction Bolt for a tunneling project, I begin with three questions: whether the drilled hole can remain within the 35–38 mm range, whether the required anchorage fits the bolt’s tested capacity, and whether the steel finish matches the underground environment. -
Global Rock Support Market 2026: Deep Mining, Safety Rules, and the Surge in Immediate Support Demand Aug. 26, 2026 The global ground support and rock bolting market enters 2026 on a structural growth path: the rock bolts segment is projected to grow from about USD 817 million in 2024 to USD 1.18 billion by 2032 (5.7% CAGR), with underground mining accounting for roughly 55% of demand, and industry forecasts pointing to a...
