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2. Spreading ground - Wikipedia

   en.wikipedia.org/wiki/Spreading_ground

   Spreading grounds are one of several available technologies, and are useful to harness storm water runoff in populated areas with low annual precipitation. For example, Los Angeles County, California has 27 such facilities, and four more operated in conjunction with the department [clarification needed], many of which date to the 1930s. [3] [4]

3. Aerial topdressing - Wikipedia

   en.wikipedia.org/wiki/Aerial_topdressing

   The first known use of a heavier-than-air machine in aerial application was on 3 August 1921 when, as a result of advocacy by Dr Coad, a USAAC Curtiss JN4 Jenny piloted by John A. Macready was used to spread lead arsenate to kill catalpa sphinx caterpillars near Troy, Ohio, United States.

4. Aerial application - Wikipedia

   en.wikipedia.org/wiki/Aerial_application

   The specific spreading of fertilizer is also known as aerial topdressing in some countries. Many countries have severely limited aerial application of pesticides and other products because of environmental and public health hazards like spray drift ; most notably, the European Union banned it outright with a few highly restricted exceptions in ...

5. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

6. Soil compaction - Wikipedia

   en.wikipedia.org/wiki/Soil_compaction

   Soil compaction is a vital part of the construction process. It is used for support of structural entities such as building foundations, roadways, walkways, and earth retaining structures to name a few.

7. Soil in the United States - Wikipedia

   en.wikipedia.org/wiki/Soil_in_the_United_States

   Soils are the product of climate, organisms and topography, acting on parent (geologic) material over time. Thus the great diversity of geologic materials, geomorphic processes, climatic conditions, biotic assemblages and land surface ages in the United States is responsible for the presence of an enormous variety of mineral and organic soils.