• Associations

• Spanish Federation of Coal Producers (CARBUNION). .
• AFAPE - Spanish Association of Manufacturers and Distributors of Fireworks - .

• Companies

• HUNOSA - Empresa Nacional Hulleras del Norte, S.A. - .
• IBERPOTASH - .
• SAMCA - Sociedad Anónima Minera Catalano-Aragonesa - .
• UEE - Unión Española de Explosivos - .
• TOLSA, S.A. - .
• SAHVL - Sociedad Anónima Hullera Vasco-Leonesa - .

• Associations

• ANEFA - National Association of Spanish Manufacturers of Aggregates - .
• ANEFHOP - Spanish Association of Manufacturers of Concrete - .
• CEPCO - Spanish Confederation of the Associations of Manufacturers of Construction Products - .
• FDP - Spanish Natural Stone Federation - .
• HISPALYT - Spanish Association of Manufacturers of Burned Clay Bricks and Tiles -
• Spanish Society of Ceramic and Glass - .

• Associations

• SERCOBE - National Association of Manufacturers of Equipment Goods. .

• Companies

• Adaro Tecnología, S.A. - .
• MSA Española, S.A. - .
• TAIM-TFG, S.A. - .
• Talleres Zitrón, S.A. - .
• Putzmeister Ibérica, S.A. - .

• ENRESA - Empresa Nacional de Residuos Radiactivos, S.A. - .
• ENDESA, S.A. - .
• SKB - Svensk Kärnbränslehantering AB - .
• NAGRA - Nationale Genossenschaft für die Lagerung radioaktiver Abfälle - .
• ANDRA - Agence nationale pour la gestion des déchets radioactifs - .
• URS - .