Electronic Journal of Differential Equations, Vol. 1999(1999), No. 48, pp. 1-8. Title: On the smallness of the (possible) singular set in space for 3D Navier-Stokes equations Author: Zoran Grujic (Univ. of Texas, Austin, Texas, USA) Abstract: We utilize $L^\infty$ estimates on the complexified solutions of 3D Navier-Stokes equations via a plurisubharmonic measure type maximum principle to give a short proof of the fact that the Hausdorff dimension of the (possible) singular set in space is less or equal 1 assuming chaotic, Cantor set-like structure of the blow-up profile. Submitted August 20, 1999. Published December 3, 1999. Math Subject Classifications: 35Q30, 76D03. Key Words: Navier-Stokes equations; singular set; turbulence.