Document 3NjxqN9ebK5OKQRZeRbqxGDa0

C 0PI Exhibit A AKsncui ait j u o ramwtr mmic* 0 ac r mojsnaa Incorporated Executive Office* 30 Church Street Berwick 6, tWnne/lvanla Raw Tort 6, R. I, August 33, 1954 C-35U Lead IotojtrlM Asaodatlc* U20 Lexington Iwu Raw Torfc 17, R. T 9ectlem We have read with Interest the reprint*, furnished by th# UA ooncsmln* tb* paintto* of Tulvadsed aurfacta, a* they appeared la Factory tUaa^OMnt and Maintenance ad la Paint and Tarolah Production, te not* that th* UA ha* devoted eoo* two year* to tha Investigation of paint lift on ^alvanita and aa are particularly lataraatad la that phase of your inveatlTttlcn covering th* prapaint *urfae* eood& tloniaf. A* railroad ear builder# a* are, on occasion, required to paint jalvanlted *urfi particularly roofa of boot care. Oar tha yaara aa have railed, with coplata *uoee, on sinpla nrab-an, rinee-off application of proprietary phoaphorl* add olutlen* applied a* directed bgr the Manufacturer, 0 la acre recent yeare thl* prapaint eurfeoe traataaot ha* failed ooapletely la It* intended purpcaa and failure ha* baan conflmad by ua in quite extensive laboratory aluatlooa of Mraral of tha proprietary oowpound*. *e vould tharafara be Most appredatlve of any detailed information you are able to furnlah la answering tha followln? penara! queitlonai 1. What affect* did your lnveatlT*tloo diaelo**, In th* ua* of proprietary phoophorle add pratreataanta, resulting fro* th* coutlive preeantly baloy applied to *alvaulted surface* ty th* Manufacturer of continuous hot-dip ^alvanlsint to prerant shit* ru*t*f 7, What 1* th* aff*ct of th* chanee fro* pure tine to aino-alindnu* alloy a ly th* falranltar to Increase ductility and adhesion! Percenter# da* th* i--t-- addition* appear to ba tettinr progressively greater, ? 3, Why do ratetiro wash prlwer paint*, ehlch ara essentially phoaphorl* add ap plicate one, prorlda *o aucb batter paint Mdhaaloo than prodded ty direct *wafe-ca application of phoaphorlo told ecNpoundsf fa, that bearing doa* th* all*red dlfferenoa In th* aaltanlM haeaf *e refer to atatenant* that th* silty ooatln* ha* ohaneed tram m] a relatively thin tino-lroo layer and heavy alno layer to b) relatively thick lno-lron layer and thin alno luyer We will appradato aa anoh Inforweticn on tha above question* and c m th* MbjMt tenarally a* your Asaoelatlea oan freely furnish, Wary truly your*, 9*or** Read, Manaqar Oeoertl Laboratorla# UOibo tf L, K Dal* (aifoad) t. K. Dal* apq "If* !**' N2784