  We analyse the spatial distribution of halo merger sites using four numerical
simulations with high time resolution of structure growth in a Lambda-CDM
cosmology. We find no evidence for any large-scale relative bias between
mergers and randomly selected haloes of the same mass at high redshift. Given a
sample of galaxies that form a Poisson sampling of halo mergers, then the
amplitude of the measured clustering ought to lead to a robust estimate of the
median host halo mass. In the hierarchical picture of structure growth, mergers
between galaxies at high redshifts are thought to create dust enshrouded
starbursts leading to increased emission in the sub-mm wavebands. Hence, a
measurement of the clustering strength of SCUBA galaxies, for example, can
determine whether or not they are giant elliptical galaxies in the process of
formation.
