There is no lead hazard known which cannot be controlled in such a way as to practically eliminate lead poisoning as an industrial disease.

The fourth paragraph makes the categorical statement that lead poisoning from anti-knock gasoline containing tetraethyl lead is one of the most serious forms.

t Tetraethyl lead ............ .................

Tests, see Inspection Tetrabromoethane, 1172 Tetrachioroethane, 1147,1172 Tetrachloroethylene, 1147, 1172 Tetraethyl lead, 1152 Tetrahydrofuran, 1173 Tetryl, 1175 Texture of control, 232-233 Thallium, 1173 Theory X and Y of motivation, 248-249 Thermal environment, 1053-1054 Thermometers, 1053 Thermoplastic, definition, 1239 Thermosetting, definition, 1239 THERP, 100 Thiocyanates, 1173 Third party liability, 192 Three E's of safety, 6-7, 151 Threshold limit values, 1041, 1075-1076, 1118 calculations, 1079-1080, 1195-1197, 1200 chemical substances, 1112, 1182-1198 excretory, 1112-1113 physical agents, 1095-1107, 1248-1251 sinusoidal vibration, 1471 Tiles, floor, 578 Tilt table saws, 814-815 Timbers, stresses (table), 1450-1452 Time-weighted average, 1079-1080, 1119, 1121, 1197 Tin snips, 984 Tires, vehicle, inflation, 1428 Tissue damage, 1060 Titanium dioxide, 1173 Titanium tetrachloride, 1173 Titanium, toxicity, 1173 Toeboards, see Raibngs and toeboards Toilet facibhes, 541-542 Toluene, 1174, 1239 Toluene 2,4-dusocyanate, 1174 Toluidine, 1174 Tongs, 991-992 pipe, 991 Tools, hand, see Hand tools Tools, machine, see Machine tools Tools, power, see Power tools, portable Torches blow, 408, 1321, 1335 welding and cutting, 956-957 Tornados, planning for, 445 Torsion tools, 888-993 Tort, 572 Total disability, definitions, 137-139 'Total safety" concept, 51 Towers, dimensions, 426 Towing of vehicles, 1437, 1443 Toxaphene, 1174 Toxicity chemical, 1109-1117, 1202-1204, 1212-1231 flammable liquids, 1296 Toxicity--Continued younger people, 1115 see also specific chemicals Toxicology, experimental, 1115-1117 hygienic air quality standards, 1118-1123 literature, 1094 NIOSH criteria documents, 1118 sources of help, 463, 1176-1177 substances, hst of, 1117, 1123-1176 threshold limit values, 1182-1198 Toxline, 463 Track, railroad, 788-789 Tractors and trailers, safety devices for, 743, 1425-1426 emergency equipment, 1427 Trade associations, 608-618 Training, see Education Tramp metal as cause of fire, 1334 Tramway, aenal, 705-706 Transfer of training, 260-261 Transportation during emergencies, 461-462, 586 Transportation, U S Dept, of, labels, 117, 655 Trauma, committee on, 604 Treads, stair, 387-388 Trench excavation, 413 Trenches, utility, 433--434 Trestles, 372 Tnboelectnc inspection, 926 Tnchlomacetonitnle, 1174 Trichloroethylene, 1174, 1200 Trigonometric functions, table of, 1466-1467 Trinitrotoluene, 1174-1175 Tnorthocresylphosphate, 1175 Trolley conveyors, 701-702 Trucks, electric, see Industrial trucks Trucks, hand, see Handtrucks Trucks, motor, see Motor vehicles Tuberculosis, 1065-1066 Tungsten arc welding, 964 Tunnels, utility maintenance, 433-434 Turning machines, 1030-1032 Turpentine, 1175 u Ultrasonic tests, 926 Ultraviolet radiation, 970, 1057 TLV's, 1105-1106 Underwriters Laboratories Inc, 600 Unfired pressure vessels, see Pressure vessels, unfired United States Government agencies, 618 Unsafe acts, 107, 154, 156-157 reducing, 83-84, 214-215 Unsafe conditions, reducing, 105-110, 154, 155 Unstable materials, NFPA definition, 1206 Upsetters, forging, 940-942 Uranium and compounds, 1175 1521

If workmen leave a tank for a period of time, such as overnight, gas tests should be made the next morning before they are per mitted to continue work Many companies use a written permit form when it is neces sary for men to enter vessels which have contained flammable liquids or to do "hot work" repairs in them Devices are available for testing for car bon monoxide, benzene, hydrogen sulfide, and tetraethyl lead hazards (This last in strument is available from the Ethyl Cor poration.)

It has been a temptation, which has not even resisted by many persons, some of whom mould know better, to credit the toxic effects exerted by gasoline to its content of lead alkyls (1 a' tetraethyl, tetramethyl, etc.).

The entire safety policy of the company is built upon meticulous car in the prevention of accidents that might result from exposure to tetraethyl lead or its decomposition products.

- REGARDING THREE DEATHS IN SA N ITY EIG H T WORKERS PROM TETRAETHYL BEAD } STANDARD O IL M W JERSEY PROPESSOR HENDERSON WIRES US SALE TO PU B LIC O P GASOLINE CONTAINING LEAD ROW REPORTED IN HEW JERSEY MARYLAND AND , S i f f i ^ f y i T i P .ST A T ES AND ELSEWHERE I T SHOULD BE STOPPED IMMEDIATELY AND P R O H IB IT E D U N T IL SUBJECT I S PULLY INVESTIGATED BY S C I E N i l P i c ^ S i R T 3 ' * OTHERWISE GREAT DANGER WIDESPREAD PO ISO N IN G AMONG MEN AT GASOLINE P IL L IN G STATIONS GARAGES R EPA IR SHOPS AND EVEN GENERAL PU B LIC PU B LIC HEALTH A UTHO RITIES EVERYWHERE SHOULD TAKE IMMEDIATE ACTION WE HAVE PROTESTED JER SEY HEALTH DEPARTMENT AND IN D U STR IA L COMMISSION DEMANDING IN V ESTIG A TIO N COPY 4JU "W jw s n W i a m m e xv p p & `s o ^ b im ioVarnwr^a 10^ <W no 10 bay Letter , NlsM Messaa* : . .

Every chemist is aware that tetraethyl lead is added to gasoline.

City and State health authorities and labor leaders, who are in a position to know if the use of tetraethyl lead, which is now universally known to be very dangerous in its undiluted form, had caused any known serious results when diluted `jt* in gasoline in their respective jurisdictions, gave absolutely negative evidence as to any such harmfulness.

Sew York, concerning the probable non-availability cl gasoline free of tetraethyl lead, in certain areas supplied iron the 'United S t a t e s .

(The high result in the blood is not an expression of the absorption of tetraethyl or tetramethyl lead, while the low value in the urine is almost equally as strong evidence against the likelihood of significant exposure to organic lead.

There are a great number and- variety of- physiologi cal problems in industry which Involve the health of employees and public* hat an importance such problems can assume is illustrated by the history of tetraethyl lead W h i c h is not yet a closed problem).

In a few instances (DuPont with chloroaniline and tetraethyl lead) , l "protective clothing committees" within the plant have been set up to determine a fair and equitable method for clothing issuance.

It wa3 my under standing that consent had been given to use J4. cc of tetraethyl lead in aviation gasoline.