  The Dual Meissner Effect description of QCD in the confining region provides
$\frac{1}{q^4}$ behaviour for the gluon propagator and involves the dual gluon
mass $m$ as a parameter. This is used in the Schwinger-Dyson equation for the
quarks in the infrared region to exhibit chiral symmetry breaking for light
quarks. Using the light quark condensate as input, the dual gluon mass is
determined and its importance in showing the asymptotic free behaviour of the
extrinsic curvature coupling in the rigid QCD string is discussed.
