The List?n Diario newspaper reports today that pressures exercised by private companies have counteracted the military operation that brought about the closing of construction material mines that are imperiling the life span of rivers throughout the country. The List?n reported that 13 mines that had been closed were reopened and more than 40 trucks loaded with construction materials that had been confiscated by the Armed Forces for illegally transporting these materials in prohibited areas were returned to the owners sans any penalty.