Fernco Metal Products
Manufacturer of manual and air/hydraulic compressed earth block presses, Cinva Rams, Adobe products, metal products, steel fabrication, custom metal work and machining.
http://www.ferncometal.com/

Aureka
Aureka is a metal workshop in the international township of Auroville and manufactures wind pumps and compressed earth block presses and other equipment supportive of sustainability.
http://www.aureka.com

Digi-Block, LLC
The path to number sense begins with a little green block! Come See the Math!
http://www.digi-block.com/

Omni Block
Insulated concrete block, technical and installation guides, gallery and distributors list.
http://www.omniblock.com

Title Block Fabrication Drafting
vendor of shop detail drawings and technical drawings
http://webhome.idirect.com/~earl10/

Blockalert
A window into spam activity based on IP block hierarchy.
http://www.blockalert.com/

Defco
Manufacturers of the Blockmaker mobile block-making machine. Includes cost comparison with standard block construction and adobe building codes.
http://www.defcoinc.com/

Greycon
Optimisation-based solutions for production planning and scheduling in the manufacturing industry. Solutions help manage inventory, solve cutting stock problem, balance switchovers for an optimised supply chain.
http://www.greycon.com/

Concrete Block Association (CBA)
The Concrete Block Association. Provides information on Aggregate Blocks, Concrete Blocks, Part E, Part L, Part J and Building Regulations
http://www.cba-blocks.org.uk/

Earthuprising Adobe Block & Machine Co.
Manufacturer of portable, diesel powered adobe block machines. Site in English and Spanish.
http://www.earthuprising.com/