E x p l or a t i on D ri l l i n g N e e d e d L o w n u mb er of l ar g e e x p l or ation p r oj ects W ith ou t e x p l or ation mos t commod ities w il l b e in a s u p p l y d ef icit w ith in f i v e y ear s New d ep os its w il l b e in ar eas mor e d if f icu l t t o acces s r eq u ir in g s p ecial iz ed d r il l in g 2 1