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Show l6. half ton was wasted to en billion tons for Now follows or eleven billions use terrible, a ton mined, one to sev extracted. were inevitable truth. the get Scientists gravely proclaim that at the present rate of extraction, our coal supply will last until 2050 A.D., only 150 years more. We need have children, perhaps the next generation, but the nor future, if he life we do not o the race is oountry's and the use find ourselves and do injury in the highly is now careful tract the up the mine mining walls, some beds at beds of shale, duty. a of the and problem have Conservation has make is this in come because to avoid of mining the often thus practically inaccessible ex product. to hold be made much smaller and temptation greater cost, and to pillars left darge to the and to substitutions, from the minimum which1might lower beds before the upper, great our imperative to reduce waste, to require mining, to reduced in number, become pity Only one-half percent of highest efficiency The waste in God extravagant waste giant proportions precious fuel has been mined. It our Its future and the infinite. been discovered in time. time. nor at stake. are But the gross lavish personal fear, no or mining intermingling more accessible causing the others to to break up and cause loss. Enormous losses occur in the use of coal. Much |
