<p>This study investigates the application of nano-composite coated jute geotextiles (NCJGT) as an innovative and sustainable material for stabilizing steep and high coal mine overburden (OB) dump slopes, addressing the limitations of untreated jute geotextiles in field conditions. Laboratory tests revealed significant improvements in tensile strength, with increases of 55.71% in the machine direction and 51% in the cross-machine direction, along with enhanced durability under acidic conditions. The results of geotechnical centrifuge modelling, carried out at g-levels of 150, 175, and 200, representing OB dump slopes with heights of 30, 35, and 40 m, respectively, indicated crest deformation reductions of up to 91.78% and slope face deformation reductions of up to 100%, corresponding to prototype decreases of up to 4.32 m at the crest and 4.04 m at the slope face. Numerical simulations supported these findings, consistently achieving safety factors greater than 1.5, thereby meeting regulatory standards. Carbon footprint analysis revealed a net CO₂ absorption of 3.654 kgCO₂/kg of NCJGT, compared to emissions of 2.7 kgCO₂/kg of synthetic geotextiles. Additionally, cost analysis showed a 23.17% expense reduction for NCJGT. This research highlights NCJGT as an environmentally sustainable, cost-efficient, and structurally reliable solution for OB dump slope stabilization.</p>