10. CONTRACTOR: InlofmcutLon unavcUlablt. 



11. COST OF BASIC STRUCTURE: ^57.00 peA {^oot OjJ 6biactuL/L2. [ln^taJLtQ.d] , 



12. REFERENCE: 



a. B7MTER, E.F. , ARMSTROWG, J. A., and McGTLL, M.R., "Sho^e 



EfioiiA^on EngZmeAAng VoxnonAtJiaution ?n.ojZ(it Poit-Coyiitnaa^on— 

 Staion ?fiOQh.Qj>& — Jnt^/um Rzpofit," CoaA>taJL lonz Lahomtofiy , 

 [lYilvQA^'itLj 0(5 liickigan, Feb. 7 974. 



6. JAKO&SEN, P.R., and NJELSON, A.H., "Some ExpeAiwents wXt^ 

 Sand TUZzd Tldxlblz Tubo.," PKoce.zdcng6 OjJ J2;t^ Coastal 

 EngJjiQ.QAA,ng Con{^2Azn(i.z, WaU)hA.ngton, V.C, 1970. 



13. NOTES: 



Re^JeAence a: Tfie tabs, koj> ^kown good H.Qj>U>tanc.z to tkz {,oa.c&& 

 acting on -at; it i6 UitntlaZ to pay caAo^^^uJi attention to tk^ pfiobtom 

 0)5 bottom pn.otQ,cjtion. . .i,om(L att2mpti> woJio, tAidd Mtth (^iltoJi ctoth but 

 MQAQ, not pfiop(inJLy executed. 



Rei^eAence b: The tmbo. 6zttZe,d to cion{,oAm Mitk the. wtntoA. pH.ol.Lt2.; 

 but tndlaateJi that the. 6t/uictun.e. tJiapptd a ^JiighZ amount o^ 6and. 



38 



