Mine roof support systems, components and method, for supporting, whether in active or passive mode, mine roof strata; first and second, mutually spaced series of brackets are supplied for mounting to opposite sides of a mine roof span, and one or more cable assemblies are looped about such brackets and secured to the mine roof strata, such cable assemblies also being provided with take-up means: the invention is suitable and effective for supporting mine roof strata at various, desire mine locations.