STE d'Entreprises Transports et Carrières (Sematec) is a provider of products and services such as aggregates for building and construction,ochre,sand, dolomitic,earths, bleaching,gravel, pumice,gravel, quartz,gravel, filter-bed,gravel, graded,stone, crushed,stone chippings and ballast,stone chippings, coated,stone and boulders for flood control and coastal barriers,sienna,umber,hoggin,sand and gravel, river,sand and gravel, pit or quarry,sand, beach,sand, mineral bearing,sand, coloured,sand, feldspathic,sand, silica,sand, crushed or graded,sand, building,sand, roofing felt,sand, glass-making,sand, pottery,sand, refractory,quarry waste,sand, sand-blasting,sand, cleaning powder,sand, filter-bed,sand, paint filling,sand, facing,sand, chromatic,sand, olivine,sand, rutile,sand, zircon,sand, dressing, for sports pitches or greens,sand, foundry,earths, filling and suspension,earths, crushed,loam.