The Parkfield Interventional EQ Fieldwork (PIEQF) was a geologically interactive, seismic machine earthwork temporarily installed in the remote township of Parkfield, Central California, USA. During ninety-one days of intervention, between the 18th August and 16th November 02008, the installation reflected 4000-4500 Californian seismic events. PIEQF interfaced with the US Geological Survey seismic monitoring network and was triggered by near real-time reported earthquake waves from magnitude (M) 0.1 and above.