Medlemmer WR Maskin AS Hardanger Grunn & Naturstein AS Håkanes Maskin AS Hegna Maskinservice AS Tverberg Entreprenør AS Hoel & Sønner AS Verdalskalk AS Ådneram Maskin AS Leif Sturla Lillestrøm Maskin/Transp.as Greåker Graving og Transport AS
