Strata reinforcement support system components used in coal mines - Specification for rockbolting Ingestion-build-264231 FM sound radio: Additional performance

FM sound radio: Additional performance requirements

Square bars

These distances will not provide sufficient protection against certain hazards

alarm and storage containers of fire extinguishing systems filled with non-liquefied inert gases or pressurized halocarbon gases

Strata reinforcement support system components used in coal mines - Specification for rockbolting Ingestion-build-264231 FM sound radio: Additional performanceBS 7861 1: 2007 specifies dimensional, material and performance requirements for rockbolting support system components used in coal mines. Components included are steel rockbolts, glass reinforced plastics (GRP) rockbolts, resins, nuts, conical seats and domed washer plates. BS 7861 1: 2007 does not cover the assembly or installation of these components to form a rockbolting support system on site.