Word: asphalted
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Many people who come to Harvard games live close to the Stadium -- Patriot fans would be converging from the center city and the most distant suburbs, and most would bring cars. Collins suggests converting some of the green area near the river into asphalt parking space. That would certainly serve the Patriots well, but what about the University...
...artificial layers of clay nor sheets of polyethylene film placed two feet below the surface succeeded in retaining moisture. Rain water leaked through seams or holes, the soil dried out, and test crops fared badly. Then, at the suggestion of the American Oil Co., the researchers began experimenting with asphalt for their water barrier. Once they had perfected their technique, the results were immediate and bountiful...
Also for Paddyfields. Trial plantings of cabbage yielded 505 crates per acre of asphalt-layered soil, compared with 260 crates for untreated acres. Potato yields rose 50% and cucumbers as much as 100%. The economics were even more impressive. With cabbage selling at $2 per crate, the increased yield would bring a farmer added revenue of $490 per acre, allowing him to pay off the cost of the asphalt layer-about $225 per acre-with his first harvest. Furthermore, Hansen and Erickson estimate, the underground asphalt will not deteriorate for at least 15 years...
...achieve underground paving, the M.S.U. researchers designed a tractor-pulled Rube Goldberg device that lifts a 2-ft.-deep strip of earth from the field, sprays warm liquid asphalt underneath it, and then allows the soil to settle back in place. The asphalt solidifies immediately into a 34-in.-wide, ⅛-in.-thick ribbon. Adjacent ribbons are overlapped to ensure that the entire layer will be watertight. To reduce costs, Engineer Hansen is now working on a machine that will lay down lO-ft.-wide strips...
...Asphalt barriers, say the M.S.U. men, can double the acreage of rice fields in the food-short countries of Southeast Asia. Used with the new Rockefeller Foundation strain of rice, they might free much of the world from the specter of famine...