Actidyn Systemes http://www.actidyn.com/
Form offering simulation of physical phenomena using vibration, universal testing machines, balancing machines, centrifuges and earthquake simulators.
Earthquake Detector http://www.quakealarm.com/
The Quake Alarm provides early warning of earthquakes by detecting the compression wave (the P wave) which preceeds the actual shear wave of an earthquake.
Force Balanced Physics http://www.force-balanced.net/
Details of a new earth in-situ mechanical systems relationship between mass, 3-D loads and stresses, pore fluid pressure, strain and rock physical properties. Also includes informations on text book and services offered.
Land Tech http://www.landtech.org/
Geophysical services and rental of geophysical equipment. Specializes in passive seismic tomography surveys for the oil industry and in pipeline early warning pollution systems.