Two decades of war left Mozambique littered with land mines. One study by the Canadian De-mining Institute estimates that there are approximately two million land mines, covering 70 percent of Mozambique's territory. The International Federation of the Red Cross and Red Crescent Societies puts the number at three million. The experience Mozambique has gained trying to remove these deadly reminders of war means Mozambique probably has some of "the most capable de-miners in the world," according to Donald F. Patierno, Director of the State Department's Office of Humanitarian De-mining Programs.