A method of lining of the basin, shell real dam and as well as transversely thereto

摘要

1,139,258. Lining watercourses; well linings; water supply reservoirs. DOW CHEMICAL CO. 16 Aug., 1966 [16 Aug., 1965], No. 36654/66. Headings E1F, E1H and E1X. [Also in Division C3] The lining of a well, ditch, pond, pit, dam or canal comprises an inherently resilient sheet of a chlorinated olefin polymer, see Division C3. Examples describe the lining of canals, ditches, ponds, oil well excavations and salt brine pits with sheets of the invention.