Document v62O8VJGBxZ98R042z0kgJE3b

.. . ; ' ii . - ' A v^ M OUNT SINAI S C H O O L OF ME DI C IN E v. * c.^ ofToi City Uni virs!:yojSea York , F I F T H a V B N U E A N D l OOTH S T R E E T * N S V YOKi l , N.Y. 10,029; -]IU \'xiriixrnt<?jComnuntlYRSfO'e '' " j . v ,v r \IN j i /j -------- J b lay 10, 1971 Assistant Corn:^ asior.or Harold Honor New Yorh City Department of A i r Resources 31 Astor Place 4V -V~**, ..*** * *X\'-W.,.*, "1PiOAT '...' Dunr Comm,lostocor Rouer: / I 'have completed a preliminary examination of the materials forwarded to our laboratory for svino ralogical a n a l y s i s T h e results are as follows: (1) Zxa-rr.ination of the- rubber ballo-as indicates that a fino vhito i powder coats thoir interior' This,, powder has boon, removed,in p a r t ,w;.th -water and the inorganic residues examined by moans of electron ni croscopy( both transmission microscopy and electron diffraction). Tbo pov/cor is made up of fibrous talc, that is talc i made of both platy> trio talc and associated ampi hibolo asbestos fibers*. *no anphibolo type in primarily trcmolltc, with some scattered aathophyllito. la ono case chrysotilo asbestos was also detected as bo in7 present. Tao amount of the so latter two asbestos minerals is extremely small. (See enclosod KM plates). (-0 hxr,;.inr.tion o'f ,'tho two body nowdor tales indicates that they both contain a-ounts of fibrous minerals, examination by li^ht micros copy and x-ray diffraction indicates that tromolito and some nntho- phyi'ito asbestos m h o up the fibrous components. Tin.' amount of pee sear so s-vmlos as cotoir.ir.od by 1iynt microscopy 3 :> ::b ne/.-ea t .hxamir.a tion of those sa,r.pies by u 1'-".son microscopy ir.uicatos many of mho fibers,exist In the -3 r-t--u-------S-i--r-.-e---r-A-:- ----.- ' .> .<* tr.a ults are r>rol iv.ir.arv ia nature nrul thru truas are warranted to delineate whether or not a ith these materials. It is of ir.lore:;t to note that h - '. -- ^4 MOUNT SI NAI S C H O O L O F M EDI C I N E of To: City University of York FIFTH AVE N U E A N D ICOTH STREET ,N'5V Y O K k', N.Y. 10,029 "yj*1" ' ,Ir,,>y* ` 2,f\irliTici:IcfCornrtitnOyT-' lay 10, 1971 Assistant Conmi ssionor Harold Eomor > Nov Yorh City Department of Air Hosources 51 Asror Place / Do a2' (lonmis sIo r.e r Ho-ac r : v Y\ 'X v K OY / I l/n I have completed a preliminary examination of the materials forwarded to OUJ shorn to ry for ainoralo^ical anal y s i s .' Tho results aro as follows: (1) H a r d nat ion of tho rubber ballons indicates that o fino whito i poa\ji;r coats thoir interior. ThiSv powder has boon. removed,in p a r t ,wrth water and tho inorganic residuos examined by means of electron microscopy( both transmission microscopy and electron diffraction). Tho powder is made up of fibrous talc, that is talc .made of both piety trio talc and associated amphibolo asbestos fibers.. The amphibolo type is primarily trcmolltc, with some scattered aathophyllito. In or.o ease chrysotile asbestos was also detected as boiatT present. Tao amount of these latter tv/o asbestos mi n o m i s is extremely small. (See enclosed HM plates). b e a m ; n r . t i o n o f ; 1 1: 0 C o : ; t a * ' m . .> U ! vl : o * two bodv nowrh'T t a l c s indicates that they both fibrous minerals, h x a m i n a t i o n b y l i ty h t m i c r o s - C< ),iV a : a ; i 4- . p ; y 1 I A w ' x-ray d iffm o t i o n indicates nob*:.; L O T aheup the fibrous that tromolito and some aatho- c o m p e n . . s ' , c s , T i n . ' air. o u s t o f H 7* * .-.a; . f r '` ` ,> t r. :o t ;. s o . - - s - ' . s l e s a s ceto:*mir.cd by li;;nt m i c r o s c o p y ' t nea t . I l x c \.\i r . a t i o n o f t h o s e s a m p l e s b y M* _ r.. a c i * > C o in tho -5 : r t c r . . r.e r a . *' ) . ( ' ; v, * t. f > t h a c t f> results are nrol iv.iimrv in n a t u r e and that - t c. m s i *- t X > > L i o r * a a r e . , .4 th eh u s e v . T . r i " r . t o < j t o d e l i n e a t e w h e t a e r o r n o t a r.aterials. It is o f i n t e r e s t to n o t e t ha t 1 t i r, d ') s n ; ; - - s t a h . > n a r d , Le ( T s r e n , 1971, sen enclosed. o < 1 X ,. :: t ' - . s t t s . n t s e C 1'*r. * n i ' r k, ... u n t i l t a o p v o b l c m i s \\ tjry tre y p c rs f u\ s ! Y\ ,i\ ';\._V-o-oh.\PV / 7^ y o/VA/ /C-rIf >  U'* ....\ U T .' MOUNT SI X A i S C H O O L OF M E D I C I N E oj Ta: Ci!y Llnivtrsy ojSiwYsr'n FIFTH A V g X U E A N D l00T H S T R U H T * K E V YORK, N*.Y, 0,029 .>y->pJ f` i r "O *\'on'/nr;/.'/ C5srirti*y ` >V May 10, 1971 Assistant Corsoi ssior.or LaroId Roc:er Ncv Vori: City Department ai Air Resources 51 As tor Placo - 5 C A 'U 4. p \**-** io ; i jkV/v J O / w d V i c,. m *?\0.V W r Un Dear C'ontais s l oner Rouer: I "have completed a preliminary examination of the materials forwarded our laboratory for minoralogical analysis.'The results are as follows: (1} Zxarr.ination of the rubber ballons indicates that a fino v/hito i powder coats tiioir interior. ThiSv pov-dor has boon removed.in 1 part ,with va ter and the inorganic rcsiduos oxaminod by means oi elect l'on micros copy ( both transmission microscopy and electron cifraction) . The pov/cer is made up of fibrous talc, that is talc mace of both platy tro talc and associated amphibole asbestos fi0 _*rs , a0 ampi:bolo type scattered an thophyllit o . la detected as boir.it present. ' minorais is extremely smala (--) E x a m i n a t i o n of "the tv o bod y now rr ta 1 cs indicates that they b o t h co n t a i n a...punts of fibrous m i n e r a l s . E x a m i n a t i o n by li^ht m i c r o n - co,-y and x-ray d i f f r a c t i o n i n d i c a t e s that t r e m o l i l o and some r m t h o p h y l i i t e aebs 1.0 s wnhcv.p the f i brous c o m p o n o i u a , Vive amoiini of pre:-v-a: tn l x m o e n -.nlos as coio:r.iucd by li;;nt m i c r o s c o p y 's - fr- -, 5 ro 55 p e r c e n t .Rxa:.iir.a tion of those samples by *!< -'tson m i c r o s c o p y t r o i c a tos m a n y of t h e fibers, exist In the - 5 m i c r -u sire r n . ------ -------------------- ' `' ) r.'-L< that t ::aq s a ro p re 1 iv.ir,a ry in nature and that ` i;" t b v in/.;s ti;;a ti on: are w a r r a n t e d to d e l i n e a t o w h e t h e r or not a 1 '.. i.r.urd with, the so m a t e r i a l s . It is of interest to noti) that ' ' h. ' rv.M 1or.-, I') ;r : ;: t a r.n a rd ex Isis (Varca , 15 71 ,s i/o enclose j... ...#x-.v is; u.`'.\r. n o Au S': con.>r;>red until tite oroole.v, in |1 jry v,2 e j.y y :O; r:^ ,\ il. /\ L10\ ^\-Vr \ . t \!.\\\\\ \\ \ x . Pk c r r \ > 'Oo'~ 4 MOUNT SINAI S C H O O L OF M E D I C I N E oj To: City University oj Skiv York FIFTH A VS .SUE A N D 100TH S T R n T * N 8 V YORK, N.Y, 10%022 strhaCKlcfConrtHKt'.yR.l(0<tni I. ' i1 May 10, 1971 Assistant; Com:; r.sior.er liarold Ron or 'Sere/ Vora City Department of Air Rosourcos 9 / j 1 /u`j t o r Ri.Ki c o .. i'C A V c A J *W 4W i iV -xW'w'Ovi w (d / a Y5>1' Dear (Jomm.Id s !o aer Roacr: I havo completed a preliminary examination of the materials forwarded * our laboratory for m.ino ra 1o ~ica 1 analysis*'Tho results are as follows; Cl) Zxar.i anti on of the rubber ballons-indicates that a fino whito i po-i-Jor coats their interior. T h i S v . powder has boon removed,in part,with water and the inorganic residues examined by means of electi-on. microscopy( both transmission microscopy and electron diffraction). The pov/der is made up of fibrous talc, that is talc made of both platy trio talc and associated amphiboio asbestos fibers*. Tao amphiboio type scattered authophyllito. In detected as boir.tf present. minerals is extremely small (-) ihrmnintion of *iho two ho-!y r>owcir ta 1cs indicates that they both contain amounts of fibrous minerals. Examination by li^ht micros copy ana x-ray hi ffractioa indicates that tremolito and some nntho phyllite asbestos makeup the fibrous composer. cs , Vue amount of : r p:-c;...-q ; tr. m e r e r a m i e s as ce t o r n nod by 11 ;rj\ t m i c r o s c o p y 'r . fr`, .1 re I'd poreor. t .Examlnn tion of those samples by *`i< ro.i r..ic:*>:.c^py inui catos m a r.y of the f ibo r s .ox is t In the - d :r:cr..r. d u n ra;; ;o. . *' > *.volts are ore1!mir.arv in nature and thru f i; ^ r>*V W*. > are warranted to do linen to whether or not a t4 ' ,. x , * \ - / /* . V I p ^ ^ e l , > G . * - v O * -* U a W. of interest to note tha _*y^v.^ .nr./a~ u w ' . ' C' t (Mi ren , 1971 ,sen e n d vdu > ... uunntil the p ...t'.i ... i.. \\ c ry tru >.y vyh;rr., ,0 . x ' L\ a a c .o n w i' * . r. r-.a (