NodalSeismic, LLC engages in the seismic acquisition business as a contractor to major oil & gas companies, engineering / con ... sulting firms, or government entities. We use truly cable free seismic acqusition equipment, the ZLand recording system from FairfieldNodal, Inc. (http://www.fairfieldnodal.com/Products/ZLand/). Our standard seismic source is a fleet of vibroseis trucks, the Hemi 60 Birdwagon from Industrial Vehicles International, IVI (http://indvehicles.com/9bw6.htm). We have also carried out seismic acquisition projects using a dynamite impulsive source, incl an 84 sq. mi. project in Texas during Oct. / Nov. 2010. read more