American Rock Mechanics Association
This association is the leading organization for professionals, companies, firms, teachers, and students in the field of rock mechanics and rock engineering.
http://www.armarocks.org/

International Journal of Rock Mechanics and Mining Sciences
Journal which publishes original research, new developments, site measurements and case studies in rock mechanics and rock engineering. Tables of contents with abstracts; full text by subscription.
http://www.elsevier.com/wps/find/journaldescription.cws_home/256/description

International Society for Rock Mechanics
ISRM's objectives are to encourage international collaboration and exchange of ideas and information between rock mechanics practitioners; to encourage teaching, research, and advancement of knowledge and to promote high standards of professional practice.
http://www.isrm.net/

Geo & Soft International
Geotechnical software for rock mechanics, soil mechanics, hydrogeology, geophysics and geology. English, Italian and Spanish.
http://www.geoandsoft.com/

Berg's Rock Shop Rock
rock tumblers, Estwing rock hammers, and lapidary supplies,rockhounds,rockhound
http://www.bergsrockshop.com/

TerraTek Inc.
TerraTek, Inc. is a geotechnical engineering company providing services and testing equipment for the oil and gas industry world wide.
http://www.terratek.com/

Demondo
digiflume™ electronic volume measurement, a digital drainage burette from demondo petrophysical laboratory instruments
http://www.demondo.com/

Macedonian Rock Art Research Centre
The Center has discovered more than 460,000 rock drawings. Aims, history, activities, publications and personnel of the Center. Illustrated outline of rock art in Macedonia. World rock art congress in 2002.
http://www.unet.com.mk/rockart/

Cornforth Consultants, Inc
Cornforth Consultants, Inc., is a Portland, Oregon based geotechnical engineering firm specializing in geotechnical engineering dams, seismic studies, landslides, rock mechanics and complex geotechnical projects.
http://www.cornforthconsultants.com/

Kane Geotech, Inc.
Kane GeoTech Inc. provides consulting and installation for a wide range of geotechnical services, including geotechnical instrumentation, slope analysis, slope monitoring, levee design, and embankment design.
http://www.kanegeotech.com/