  We study the environments of 49 WISE/NVSS-selected dusty, hyper-luminous, z~2
quasars using the Atacama Large Millimeter/Sub-millimeter Array (ALMA) 345GHz
images. We find that 17 of the 49 WISE/NVSS sources show additional sub-mm
galaxies within the ALMA primary beam, probing scales within ~150 kpc. We find
a total of 23 additional sub-mm sources, four of which in the field of a single
WISE/NVSS source. The measured 870 um source counts are ~10 times expectations
for unbiased regions, suggesting such hyper-luminous dusty quasars are
excellent at probing high-density peaks.
