	spie batignolles could increase comstock holding construction group spie batignolles is negotiating to increase its holding in u s engineering and electrical installations firm comstock spie batignolles a subsidiary of schneider sa schn pa said in a statement it was negotiating to invest mln dlrs in comstock in the form of bonds convertible into shares spie batignolles has held a pct stake in comstock since february a spokesman said if spie batignolles converted all the new bonds it could open the way for the french company to take control of comstock but he gave no other details reuter 
