    1501   bretton woods             s       s      s                     -      78m ,     s             linkages      linkages                 - zones,      forces   mines   mines     mines                   -              116  502b  1961  2151n  2304   mines      78m, 78o               g     - fatalities      coal  mines,      hazards      8k       hazards       78a      78c      1504    78m ,     pieces       1505     8g     1506     economies                            