2012SN/T 0067-2012 Mechanical method for sampling and sample preparation of coal for import and export
1992SN 0067-1992 Mechanical method for sampling and samplepreparation of coal for export
SN 0067-1992 Mechanical method for sampling and samplepreparation of coal for export was changed to SN/T 0067-2012 Mechanical method for sampling and sample preparation of coal for import and export.