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		Major Performance
		
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					Korea Gyeongbu High Speed Railway Section 9-2 Pilling Work
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							Period
							1997.07 ~ 1997.12
						
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							Client
							Korea Railway Co.
						
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							Location
							Gyeongsangbuk-do, Republic of Korea
						
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							Explanation
							hole round : Φ1,500 mm,Φ1,200 mm
 Bon Number : 414 Bon, 482 Bon
 Maximum depth : 20m, 24m
 
 
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					Korea Busan Nambu Interception Sewer
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							Period
							1991.12 ~ 1997.03
						
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							Client
							Busan Metropolitan City
						
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							Location
							Busan, Republic of Korea
						
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							Explanation
							EPB, LENGTH : 5,903(M)
 DIAMETER : 3,050(mm)
 Ground : Soil, Soft Rock(N=10~50)