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Erosion Control - University of Washington
depts.washington.eduAn alternative to using erosion control blankets, hydro mulching consists of organic mulch such as wood fiber or paper cellulose that is mixed with water and sprayed on the slope. There is mulch that contains soil stimulants that encourages the development of mycorryhizal organisms.
AUTOMATIC STREET LIGHT CONTROL SYSTEM (MINOR …
logixproject.weebly.comAutomatic Street Light Control System is a simple and powerful concept, which uses transistor as a switch to switch ON and OFF the street light automatically. By using this system manual works are removed. It automatically switches ON lights when the sunlight goes below the visible region of our eyes.