CHAPTER XVII. CONSERVATION OF MINERAL RESOURCES 359

THE PROBLEM 359

DIFFERENCES BETWEEN PRIVATE AND PUBLIC EFFORTS IN CONSERVATION 363

THE INTEREST RATE AS A GUIDE IN CONSERVATION 364

ANTI-CONSERVATIONAL EFFECTS OF WAR 365

CONSERVATION OF COAL 366

MEASURES INTRODUCED OR PROPOSED TO CONSERVE COAL 367 (A) Mining and preparation of coal 368 Progress in above methods 370 (B) Improvement of labor and living conditions at the mines 372 (C) Introduction or modification of laws to regulate or to remove certain restrictions on the coal industry 373 (D) Distribution and transportation of coal 376 (E) Utilization of coal 377 (F) Substitutes for coal as a source of power 378

DIVISION OF RESPONSIBILITY BETWEEN GOVERNMENT AND PRIVATE INTERESTS IN THE CONSERVATION OF COAL 379

CONSERVATION OF MINERALS OTHER THAN COAL 382