Document By1XzVzjd1xrqLY5mdVYZD7vw
22142
RULES AND REGULATIONS
Tabu 0*3
Matcrfsl
&*hottr Urn*
Tre!sn*f<l
areray*
Acceptable
concentration
Acceptable .'naii.'nura peaiafcoc*
`.ue acceptable cctllu; cocccntra-
"s."-m- (or an i-nour *aUt.' -----
Concentration
Mdausnutujouaa
Ser.:*siei/.J? *-10631............-.r.---10 p.p.a............... ?! p.p.pi.SO p.p.m....;-- 10 minutes;
borr'l.uai *<i beryllium compounds 2.......
........ . --
............ * 20 minutes:
ciiriMm fume (Z37.5-n7C).........3.1
............3
............................................
C iCnr.um dust (Zjr.VtNOi.................... 3.2 me-,'M3....... 3-6
........... .............
C ./Iron .ii-ui;Me Z27.>i:>\s>......................... COn.p.ra.................30 p.p.m.................200 p.p.m...............
Do.
CAruotti*imt.nior:dy X/J7.i7-196?)................ lOp.p.n................. 25p.p.ci...............::o p.p.ta............... 5 minutes (a
any 4 neurs;
E^vtfliiedl'iroRiiiJ* ^3741-10701..:............tOo.p.n................ 33o.p.n.............50p.p.a.................... 5 8::r.utC5. Eiiiytcu* Ufchior.de \Z3r.2l-l2uO).......... 50 p.p-m._....... lw p.pua........ *220p.p.m....... 5 minutes in
my 3 hours:
forrr.MifcujrUc'Z37.10-l?071........................... 3p.p.ta.....................Sp.p.a...
'.Op.pii.............. 30 minutes.
rluorhl* (Z37.2S-1M0). . ..............do........--.........
FIaor.utf ns dusc IZ37.25-IM9).................. 2.4 ir.q./M3--........................... Lead anu its more uuccompounda(Z37.U- 0.2 ms./M3..--....------- --...
IW.'l.
SIjyl ctiiulilo (Z37.1S-10M)......................... lOOp.p.m.........OOOp.p.ra...
SCO p.p.a............ 5 miaafcs !o
my 3 noun;
iiam.^uo ciuj.d. vc:r--::ra.............-- iw?.r.:a........ iyo o.p m.
2.COO O.pjl
5 suaut*s in
any 2 ucurs.
0rz'-.7i I-iK-tU ";/cur7 iZjt.SO-i'jai)..........O.Ot nui.,:S
0.04 xr-11>.
iZor.-.o-ijilj).................................... lOQp.p.iu........ lOOp.p.m...
00 p.p.n._... 5 mlcut&s la
any 3 sours.
Trich'u'ceebyletie \Z37.l0-i2OI)
.do. .do.......................3Mp.pja............... 5 minute* (a
my 2 sours.
TVriJJcrocthy'.eao ^237.22-1007).......................... do.........................do................. -............. do..
5 minutes ui
any 3 Sours.
ToMcuo iZCMJ-l.-u:)....................................... 2C2 p.p.m........."0 ^.?.a................... *C3 p.p.m............ 10 minutes. Urartu sulildA iZ37.2-nw).......................................................20 p.p-n.................... 40 p.px:................ 10 txunu'ei ones
octmheyr1m/ niaosur*
able exposuro
occurs.
Mercury .Zjr.S-l971)............ ......................................................... i
*,
Cl.ro*:i:a acid ondcuroattted (Z37.7-1071)............................... .....do1....
TiSLi G-J--Mineral Dcstj
Substance
ifppcl MS/M*
AeroUr-mcalc liaraeter (uuu dciiiU? sphere)
Percent pnssm? selector
90
otilca;
Cr>.:fr.illne: Quarts (refpirable).........
230 * \0af/M' *
2.5 3.5 5.0 10
75 50
25 0
rC^lOt-r5 ^SlOH-2
Quarts (total 4us:).-...........
The measurements under this note refer to tho use of
%SiOrr2 an A EC mstrurnenr. II the respirable fraertoa of coal
Crsstoi*alte: V?d l.< tba r.mn iuicuu.*e<i Iron the
dust :s dvtertnir.ed `Mth a MRE tlte figure corresponding
to that ot 2.1
in me table for coaidust ts 44
count or munj formulae fof
quarts. Tnuvumc: l l-j 'he ralue
lalculitod from me forrau^e fur quarts. Amorphous. iiiwiuu:nc natural uiawmiacoous <*ar:h...........s
y ''S 19 10.93j Asbestos.
(a) Definitions. For the purpose of
this section, (1) ".Asbestos" includes
20 SOratOP chrysocile, amosite, crocidoLite, tremoiite, anthophyllite, and actinoltte.
0-;siO:
(2) "Asbestos flbers" means asbestos
Silicates (tess than l% crysU;`.iuc suica):
Mien.........................................s .'oopjtone___ .............. ructtion-2sii<itos-form)...
Tnic (fibrous). ITse asbestos u:mc................................
20 20 20s
fibers longer than 5 micrometers.
(b) Permissible exposure to airborne concentrations of asbestos fibers--(X) Standard elective July 7, 1372. The 8-hour time-weighted average airborne
Tremolite
taic.hbroua)
Porilumi c*c*.enc...........
Cnphup ir.atunl)...............
3 13
concentrations of asbestos flbers to which any employee may be exposed
-----Corl ilivsi trvpiraolc fraction lc*s than 4*^ iiOjj............ . For usori than 510-............: Inert or Nuisance Dust:
or lOnwM*
%SLOi-r2
shall not exceed five fibers, longer than 5 micrometers, per cubic centimeter of air. as determined by the method pre scribed in paragraph (e) of this section.
(2) Standard effective July 1. 1976.
H*>pirjbJe fraction....___ s Tutal ilust...............................
15 50
Tlio 3-hour time-weigh ted average air lSms/M' borne concentrations of asbestos fibers
Not::: C. areruon factors--
ssppcfX35.3-rr.ii:ion particles per cubic meter -panicles perc.c.
to which any employee may be exposed shall not exceed two fibers, longer than
5 micrometers, per cubic centimeter of
* Millions 0/ parr:cl's per cubic foot of air. baaed ou Unp'.'sijer a:up!t* counted by l:cht-ri'ld trcniucs.
1 The perevucane ol crystalline *.I:ca 111 ihe formula
air. as determined by the method pre scribed in paragraph (e) of this section.
Is the jn:nm: d^tersnuivd from ur-iorno Jaiuolcs, oe-
caeiicrttrun 1ru0oJj.c anp.liables.a which o:h*.r methods have oecu
(3) Ceiling concentration. No em ployee shall be exposed at any time to
As dM-'rmm.cd ny the n^mbrano filter method at
43t)>r;*naj>`
mc?Mi:ica(3n.
3 Moth *'u **<*ti:rat:jii and uer.**'::: quart: far ti:^ appli-
c_:.-,n a. xt*^ ar.;:`. *.:* 'n i>(
ct from tr.e f'actm.t
T-.*.*' a
r.-r wj;n -tn*c:!ar-e*- istica:
airborne concentrations of asbestos
fibers in excess of 10 fibers, longer than 5 micrometers, per cubic centimeter of air. as determined by the met.cod pre
sented in paragraph \ei of tats section.
(c) Methods of compliance_d) En
gineering methods, (i) Engineering con
trols. Engineering controls, such as, but
not limited to. isolation, enclosure, ex
haust ventilation, and dust collection,
snail be used to meet the exposure limits
prescribed in paragraph U of this section.
(:i) Local exhaust ventilation. <a)
Local exhaust ventilation and dust col
lection systems shall be designed, con
structed, installed, and maintained in
accordance with the American National
Standard Fundamentals Governing the
Design and Operation of Local Exhaust
Systems. ANSI ZO.2-1971, winch is in
corporated by reference herein.
lb) See 1 I910.d concerning the avail
ability of .'ANSI Z3.2-19T1, and the
maintenance of a historic file in connec
tion therewith. The address of the Amer
ican National otanuards Institute Is given in 3 XyiO.iOu.
(iii) Particular tools. All hand-op
erated and power-operated tools which
may produce or release asbestos fibers
in excess of the exposure limits pre
scribed in paragraph ib) of this section,
such as, but not limited to; saws, scorers,
abrasive wheels, and drills, shall be pro
vided with local exhaust ventilation sys
tems in accordance with subdivision iii) of this subparagraph.
(2) Work practices--H) Wet methods.
Insofar as practicable, asbestos shall be
handled, mixed, applied, removed, cut,
scored, or otherwise worked in a wet state sufficient to prevent the emission
of airborne flbers m excess of the ex
posure limits prescribed in paragraph
(b) of this section, unless the usefulness
of the product would be diminished
thereby.
(li) Particular products end opera
tions. No asbestos cement, mortar, coat
ing. grout, plaster, or similar macenai
containing asbestos shall be removed
from bags, cartons, or ocher containers
in which they are shipped, without being
either wetted, or enclosed, or ventilated
so as to prevent effectively the release of
airborne asbestos fibers in excess of the
limits prescribed in paragraph (b) of
this section.
^
(iii) Spraying, demolition, or removal.
Employees engaged in the spraying of
asbestos, the removal, or demolition of
pipes, structures, or equipment covered
or insulated with asbestos, and in the
removal or demolition of asbestos in
sulation or coverings shall be provided
with respiratory equipment in accord
ance with paragraph (d)(2) (iii) of this
section and with special clothing in ac
cordance with paragraph (d) (.3) of this
section.
(d) Personal protective equipment--
(1) Compliance with the exposure limits
prescribed by paragraph (b) of this sec
tion may not be achieved by the use of
respirators or shift rocatlon of em
ployees, except:
<i) During the time period necessary
to install the engineering controls and
to institute the work practices required
by paragraph <c) of this section:
(ii) In work situations m v.r.ithe
methods prescribed m paragraph c. ct
vc'_ zr,
iVIIfeSOAV, CCT02S3 13, 1972
,o3
PLAINTfFF'S EXHIBIT MBL-295
447241
RULES AND REGULATIONS
22X43
this section are either technically not
feasible or feasible to an extent insuffl-
cient to reduce the airborne concentra tions of asbestos fibers below the limits
prescribed by paragraph (b) of this
section: or (lii) In emergencies. (lv) Where both respirators and per
sonnel rotation are allowed by subdivi
sions (i). (ii), or ilii) of this subpara
graph. and both are practicable, person
nel rotation shall be preferred and used. (2) Where a respirator is permitted by
subparagraph (1) of this paragraph, it shall be selected from among tnose ap-
. proved by the Bureau of Mines. Depart ment of the Interior, or the National In stitute for Occupational Safety and Health. Department of Health. Educa tion. and Welfare, under the provisions of
20 CYR Part 11 (31 PH. 6214. Mar. 25.
uiii, aim anan oe Usiru ui accoi canoe
with subdivisions <i). (ii), (ill), and (iv)
of this subparagraph. (1) Air purifying respirators. A reusa
ble or single use air purifying respirator, or a respirator described in subdivision fii) or tiii) of this subparagraph, snail
be used to reduce the concentrations of airborne asbestos fibers m the respirator
below the exposure limits prescribed in paragraph fb) of this section, when the
celling or the 8-hour time-weighted aver age airborne concentrations of asbestos
fibers are reasonably expected to exceed
no more than 10 times those limits. Ui) Powered air purifying respirators.
A full facepiece powered air purifying respirator, or a powered air purifying
respirator, or a respirator described in subdivision 'iii) of this subparagraph, shall be used to reduce the concentra
tions of airborne asbestos fibers in the respirator below the exposure limits pre
scribed m paragraph tb) of this-section, when the ceiling or the 3-hour time-
weighted average concentrations of asbestos fibers are reasonably expected
to exceed 10 times, but not 100 times, those limits.
(iii) Type "C" supplied-air respirators, continuous (low or pressure-demand
class. A type "C" continuous Sow or pres
sure-demand. supplied-air respirator shall be used to reduce the concentra tions of airborne asbestos fibers in the
respirator below the exposure limits pre
scribed in paragraph * b) of this section, when the ceiinig or the 8-hour time-
weighted average airborne concentra tions of asoestos fibers are reasonably
expected to exceed 100 times those lhiuts. (iv) Establishment ot a respirator pro
gram. ia) The employer shall establish
a respirator program in accordance with
the requirements of the Anieiican Na tional Standards Practices for Respira tory Protection. ANSI Z33.2-19S9. winch is incorporated by reference herein.
b. See 5 1910.6 concerning the avail
ability of ANSI Z38.2-1969 and the main tenance of an historic f.ie in connection
therewith. The address o: the American
National Scnndaras Institute is giver, in
1910.100.
icj No empio'-ec s'.'.ai: bo assigned lo
t.-.sk? re:.:. ring me o:
..is."
based upon his most recent examination,
an examining physician determines chat
the employee will be unable to function
normally wearing a respirator, or that
the safety or health of the employee or
other employees will be impaired by h.s
use of a respirator. Such employee shail
be rotated to another jcb or given the
opportunity to transfer to a different po
sition whose duties he is able to perform
with the same employer, m the same geo
graphical area and with the same senior
ity, status, and rate of pay he had ;usc
pr.or to such transfer, if such a different
position is available.
(3) Special clothing: The employer
shall provide, and require the use of. spe
cial clothing, such as coveralls or similar
whoie body clothing, head coverings,
gloves, and foot coverings for any em
ployes exposed to airborne comeutra-
.urns ui dsoestv; .lores, '.ui:::: exceeu :r.e
celling level proscribed in paragraph >b)
of this section.
(4) Change rooms: ii> .At ?.ny fixed
place of employment exposed to airborne
concentrations of asbestos fibers m ex
cess of the exposure limits prescribed in
paragraph <b) of this section, the em
ployer shall provide change room.: for
employees working regularly at the place.
di) Clothes lockers: The employer
shall provide two separate lockers or con-
tamers for each employee, so separated
or isolated as to prevent contamination
of the employee's street clothes from his
work cloches.
(iii) Laundering: (a) Laundering of
asbestos contaminated clothing shall be
done so as to prevent the release of air
borne asbestos fibers in excess of the ex
posure limits proscribed in paragraph <b)
of this section.
(b) Ar.y employer who gives asbestos-
contaminated clothing lo another person
for laundering shall inform such person
of the requirement in (a) of this subdi
vision to effectively prevent the release
of airborne asbestos fibers in excess of
the exposure limits presented in para
graph (b> of this section.
ic) Contaminated ciothing shall be
transported in scaled impermeable bags,
or other closed, impermeable containers,
and labeled in accordance with para
graph (s' of this section.
(e) .Method of measurement. All de
terminations of airborne concentrations
of asbestos fibers shall be made by the
membrane filter method at 400-450 X
'magnification) (4 millimeter objective)
inch phase contrast illumination.
f) Monitoring--'!) Initial determi
nations. Within G months of the publi
cation of this section, every employer
shall cause every place of empiovmrnt
where asbestos fibers are released to be
mens cored in such a way as to determine
whether every employees exposure to
asbestos fibers is below the limits pre
scribed ui paragraph (bi of tilts sec
tion. If the limits are exceeded, the em
ployer shail immediately undertake a
compliance program :n accordance -.aih
paragraph <c) of ihis section.
>2) Personal '.or.iicriiic--i> Cam
ple-: cilt-.il oe callectea fie.n
th-e
breathing zone of the employees, cn membrane filters of 0.3 micrometer po rosity mounted in an oper.-face filter holder. Samples snail be taken for the determination of the 8-hour timeweighted average airborne concentra tions and of the ceding concentrations of asbestos fibers.
ci) Sampling frequency and patterns. After the initial determinations recuired by subparagraph (I) of this paragraph, samples shail be of such frequency and pattern as to represent with reasonable accuracy the levels of exposure c: em ployees. In no case shall the sampling be done a; intervals greater than 5 months for employees whose exposure to asoestos may reasonably be foreseen to exceed the limits prcscr.bed by paragraph >b) of this section.
samples shall be collected from areas of a work environment which are represent ative of the airborne concentrations of asbestos fibers which may reach the breathing zone of employees. Samples shall be collected on a membrane filter of 0.8 micrometer porosity meunted in an open-face filter holder. Samples shall be taken for the determination, of the 3hour time-weighted average airborne concentrations and ot' the ceding con centrations of asbestos fibers.
(ii) Sampling frequency and patterns. After the initial determinations required by subparagraph (1) of tins paragraph, samples shall be of such frequency and pattern as to represent with reasonable accuracy the levels of exposure of the employees. In no case shall sampling be at intervals greater than a months for employees whose exposures to asbestos may reasonably be foreseen to exceca the exposure limits preserved in para graph (b) of this sect.on.
(4) Employee observation of monitor ing. Affected employees, or their rep resentatives. shail be given a rea-er.abie opportunity to observe any monitoring required by this paragraph and snail have access to the records thereof.
(g) Caution signs end labels. <T> Cau tion signs, (i) Posting. Caution signs shall be provided and displayed at each location where airborne concentrations of asbestos fibers may be m excess of the exposure limits prescrioed in paracrr.pn ib) of this section. Signs shall be posted at such a distance from such a location so that an employee may read the s:gr.s and take necessary protective steps ccfore entering the area marked bv the signs. Signs shall be posted at ail ap proaches to areas containing excessive concentrations of airborne asoertos fibers.
(ii) Sign specifications. The warning signs required by subdivision i J of ':'.:s subparagraph shall conform to the re quirements of 20" x 14" vertical forma: signs specified in 5 1913.145-a 4 and to tins suctuvision. The signs shad cr.splay the following leger.a :n the :-fev panel, with letter sizes m.ci s. Its of a
v:-:::;.r: : tit eq;::: :s '-I..'.: r- - -
m :r-.-: suae.'..?::..'..
447242
-221.14
RULES AND REGULATIONS
A^bC.ltCS
Dus: Hazard.
Avoid 3reac!n? Dust.-- Wear Assisted Prstecttvo
Dqu:umtt5. Da N*o: 3a:au Area
Notation 1" Sana Serif.
GotMc or 31oc!c. =i" Sans Ssrlf. Co th 1c or aiccx. -i ' cornio.
Gothic.
c-omic.
paragraph, which indicates the cmplovee's own exposure to asbestes fibers.
(3) Employes notification. .'my em ployee found to have seen exposed at any time :o airborne concentrations of asccstos fibers :n excess of the limits pro scribed in paragraph 'b) of this section
shall be notified in writing of the expo
sure as soon as pracncaole but not later
than 5 days of tile fuming. The employee
to the Assistant Secretary of Labor for Occupat.sii.ii Safety and Ileaitii. the
Director 0: NIOSH. to authorized physi cians and meaical consultants cf either of them, and. upon the request of an em ployee or former employee, to his physi
cian. Any physician who conducts a
medical examination required by this paragraph shaii furnish :o the employer of the examined employee all the infor
Unless Your Woric P.equsrrs It. Sreaciun? Asbestos Duss ?ray Be Hazardous To Your Health.
14 poms Gothic.
Spacing between lir.es shall be at '.cast
shaii also be timely notified of t'tie cor mation specifically required by this
rective acf.ou being taken.
paragraph, and any other medical in-
(ji ideated examinations--1) Gen fermauen reia-ed to occupational ex
eral. The employer shall pror.de or m.a.-ce posure :o nsocstos fibers.
available a: his cost, mccical examinetious relative to exposure to asbestos re
,
3
1910.9-1.
Vi-niil.uion.
equai :o the hotgnt oi the upper of any quired by tills paragraph.
(a) Abrasive blasting--< 1; Ee.-.ni-
two iir.es.
(2) Preplacenicnt. The employer shall tiens applicable to tins paragrc.pii.-- 1)
<2; Caution labels--';) Labeling. Cau provide or make available to each of his Abrasive. A soiid substance used in an
tion labels shall be -mixed co all raw employees, within 30 calendar days fol abrasive blasting operation.
muiziiaia. mixtures. scrap, waste, debris. lowing his frst- employment in an (ii> Abrasive-blasting respirator. A
occup-.'.ia.i ;::;:.t. tti to ir'teme ton- continuous ilotv nr-lmc respirator con
fiber". or to their containers, except that ceiuracions of as.oestos fibers, a compre structed so that it will cover the wearer's
no label is required where asbestos fibers hensive medical examination, vnicn shall head. nock, and shoulders to protect liiza
hare been metunsd by a bending agent, Include, as a minimum, a chest roent from rebounding abrasive.
no.v.inc. binder, cr other material so that genogram 1 posterior-anterior U x 17 iii) Slc.sc cleaning barrel. A complete
atirut,: any rc-;..-:or.ao!y foreseeable use. inches', a history to elicit symptom enclosure winch rotates on an axis, or
handling. storage. disposal, processing, or atology of respiratory disease, and which has an internal moving tread to
transportation, no income concentra pulmonary function :est3 to include tumble the parts, m order to expose vari
tions of asbestos fibers in excess of the forced vital capacity (FVC) and forced ous surfaces of the parts to the action of
exposure iur.its prescribed m paragraph expiratory volume at 1 second (~V,.,). an automatic blast spray.
lb) of tliis section a-.U be released.
(3) Annual examinations. On or be (iv) Siast cleaning roam. A complete
(li) Label specifications. The caution fore January 31. 1073, and at least an- enclosure in which blasting operations
labeis required by subdivision (i) of this nuaiiy thereafter, every employer shall are performed and where the operator
subparagraph shall be printed in letters provide, or make available, comprehen works Inside of the room to operate the
of sufficient size arid contrast as to be sive medical examinations to each of ills blasting nozzle and direct the flow of the
readily visible and legiclc. The label shall employees engaged in occupations ex abrasive material.
state:
posed to airborne concentrations of as (v) Blasting cabinet. An enclosure
Cactiost
bestos fibers. Such annual examination where the operator stands outside and
Coat-alas Asbestos Fibers
.Avoid Creating Dust
Breathing Asbestos Dust May Cause Serious Bodily Harm
shall include, as a minimum, a chest
roentgenogram f posterior-anterior 14 x 17 inches). a history to elicit symptom atology of respiratory disease, and
pulmonary function tests to include
operates the blasting nozzle through an opening or openings in the enclosure.
(vi) Clean air. Air of such purity that
it will not cause harm or discomfort to an
individual if it is inhaled for extended
(h> Housekeeping--(1) Cleaning. All forced vital capacity (FVC) and forced periods of time.
external surfaces m ar.y place of employ expiratory voiume at 1 second (FHTVY.), (vu) Dust collector. A device or com
ment siiail be maintained free of accu (4) Termination of employment. Tile bination of devices for separating dust
mulations of asbestos fibers if. with their employer shall provide, or make avail from the air handled by an exiiaust
dispersion, there would be an excessive able, within 30 calendar days before or ventilation system.
concentration.
aftc-r die termination of employment of (viii) Exhaust ventilation system. A
(2) Waste disposal. Asbestos waste, any employee engaged in an occupation system for removing contaminated air
scrap, debris, bags, containers, equip exposed to airborne concentrations of from a space, comprising two or more
ment. and asbestos-contaminated cloth asbestos fibers, a comprehensive medical of the following elements (a) enclosure
ing. consigned for disposal, which may examination which shall include, as a or hood, (b) duct work, (c) dust collect
produce in any reasonably foreseeable minimum, a chest roentgenogram, (pos ing equipment. Id) exhauster, and (2)
use. handling, storage, processing, dis terior-anterior U x 17 inches), a hiscory discharge stack. posal. or transportation airborne concen to elicit symptomatology of respiratory (Lx) Particulate-filter respirator. An trations of asbestos Soars in excess of the disease, and pulmonary function tests air purifying respirator, commonly re
exposure limits prescribed in paragraph to include forced vital capacity (FVC) ferred to as a dust or a fume resptrator.
ib) of this section shall be collected and and forced expiratory voiume at 1 second which removes most of the dust or fume
disposed of in sealed impermeable bags, (FEW,).
from the air passing through the device:
or other closed, impermeable containers. (5) Recent examinations. No medical (X) Respirable dust. Airborne dust m
(:) Recordkeeping--<T) Exposure rec
ords. Every employer shall maintain rec
ords of any personal or environmental
monitoring required by this section. Rec
ords shall be maintained for a period of
at least 3 years and shall be made avail
able upon request to the Assistant Secre
tary of Labor for Occupational Safety
and Health, the Director of the National
Institute for Occupational Safety and
Health, and :o authorized representa
tives of either.
C.'.i Employee access. Every employee
rr.d former employes si'..'.:! have reason-
rccrrs to
record required to bo
mainteiazb jy suzparr.7rr.ph >.1/ of tins
examination is required of any em ployee. if adequate records show that the employee has been examined in ac cordance with this paragraph within the
past l-year period.
(G) Medical records--(0 Mainte nance. Employers of employees examined pursuant to this paragraph shaii cause to be maintained complete and accurate
records of all such medical examina tions. Records shall be retained by employers for at least 29 years.
i;i) Access. The contents of the rec ords of r'.te medical examinations required by ix:, paragraph shall be made avaiiuuie. for inspection and copying.
sizes capable of passing through the up per respiratory system to reach tnc lower lung passages.
Cxi) Rotary blast cleaning table. An enclosure where the pieces to be cleaned arc positioned on a rotating tabid and are passed automatically through a senes oi
blast sprays. (xii) Abrasica blasting. The forcible
application of an abrasive co a surface by pneumatic pressure, hydruu.ic pres sure, or centrifugal force.
(2) Dust hazards from abrasive blast ing. d) Abrasives and the surface coatings on the mate mils blasted are shatter an ana pulverized buna 5 -k-zt.-i;
.at'At
vat.
tee--'-v=Di(=:PaY, octc z.i is, 1772
447243