2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48590I discuss a method for producing a quasi-realistic inter-generational quark mass hierarchy in string models. This approach involves non-Abelian singlet states developing intermediate scale vacuum expectation values. I summarize recent investigations into string model realization of this. Talk presented at QCD98, Paris, France, 1-6 June 1998.10 pages. Standard LatexHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext