  We have used 850$\mu$m maps obtained as part of the Canada-UK Deep
Submillimeter Survey (CUDSS) to investigate the sub-mm properties of
Lyman-break galaxies (LBGs). We used three samples of Lyman-break galaxies: two
from the Canada-France Deep Fields (CFDF) survey covering CUDSS-14 and CUDSS-3,
and one from Steidel and collaborators also covering CUDSS-14. We measure a
mean flux from both CFDF LBG samples at a level of $\sim2\sigma$ of 0.414 $\pm$
0.263 mJy for CUDSS-03 and 0.382 $\pm$ 0.206 mJy for CUDSS-14, but the Steidel
et al. sample is consistent with zero flux. From this we place upper limits on
the Lyman-break contribution to the $850{\mu}m$ background of $\sim$20%. We
have also measured the cross-clustering between the LBGs and SCUBA sources.
  From this measurement we infer a large clustering amplitude of $r_o$ = 11.5
$\pm$ 3.0 $\pm$ 3.0 $h^{-1}$Mpc for the Steidel et al. sample (where the first
error is statistical and the second systematic), $r_o$ = 4.5 $\pm$ 7.0 $\pm$
5.0 $h^{-1}$Mpc for CFDF-14 and $r_o$ = 7.5 $\pm$ 7.0 $\pm$ 5.0 $h^{-1}$Mpc for
CFDF-3. The Steidel et al sample, for which we have most only significant
detection of clustering is also the largest of the three samples and has
spectroscopically confirmed redshifts.
