Building construction; installation and repair for/of facilities and installations for the cement, lime, plaster, refractory, smelting and chemical industry, for mining and the power industry; construction of facilities and installations for the cement, lime, plaster, refractory, metallurgy, mining, power, energy and chemical industries; construction consultancy relating to facilities and installations for the cement, lime, plaster, refractory, smelting and chemical industry, for mining and t...