Cusack, B JMcClelland, DavidScott, Susan MSearle, AntonyHeefner, JHeurs, MHough, JIvanov, A2015-12-132015-12-130556-2821http://hdl.handle.net/1885/80099We use data from the second science run of the LIGO gravitational-wave detectors to search for the gravitational waves from primordial black hole binary coalescence with component masses in the range 0.2-1.0M. The analysis requires a signal to be found in the data from both LIGO observatories, according to a set of coincidence criteria. No inspiral signals were found. Assuming a spherical halo with core radius 5 kpc extending to 50 kpc containing nonspinning black holes with masses in the range 0.2-1.0M, we place an observational upper limit on the rate of primordial black hole coalescence of 63 per year per Milky Way halo (MWH) with 90% confidence.200510.1103/PhysRevD.72.0820022015-12-11