  We survey 44 young stellar objects located near the edges of
mid-IR-identified bubbles in CS (1-0) using the Green Bank Telescope. We detect
emission in 18 sources, indicating young protostars that are good candidates
for being triggered by the expansion of the bubble. We calculate CS column
densities and abundances. Three sources show evidence of infall through
non-Gaussian line-shapes. Two of these sources are associated with dark clouds
and are promising candidates for further exploration of potential triggered
star formation. We obtained on-the-fly maps in CS (1-0) of three sources,
showing evidence of significant interactions between the sources and the
surrounding environment.
