Åsland Pukkverk AS
Lundby og Rygg AS
Kaare Mortensen Oslo/Akershus ASOskar og Tormod Wike ASNordisk Fundametering ASArne Olav Lund ASBrødrene Dokken ASAK Granheim ASNorsk Gjenvinning AS
PEAB Norge AS Øst-Riv AS Romerike Maskin AS OBAS-Øst AS Franzefoss Pukk AS Ole M. Almeli AS Kjeldaas AS