If the presentation of the raw data by his method, does any good at all in setting up this "lead" issue in understandable form, I shall be content with it.

Champion 013377 013C73 JOB~ CLASSIFICATION / , ~ Maintenance Clerk Mechanic QC Lab Supervisor QC Technician/Days QC Technician/Shift * Monitoring Analyst Boiler Lead Operator Boiler Operator Pilot Plant Group leader Pilot Plant Engineer ~ __________ r Week Of /~3 //,?

The change over of the heat exchange systems to fluids containing no PCB's should lead to further decreases in the PCB levels in the sewers.

Relating to your question of what toxic effects can be expected from the handling of paper containing polychlorinated biphenyls, we have no information that would lead us to believe that any problems exist.

Presumably, substances such as lead, benzene, etc would be controlled by establishing the Category, and then filling in exposure limits, etc.

Kerley, "Engines and Effects of Lead-Free Gasoline," SAE Paper No. 710367, presented at Mississippi Valley Section meeting, October 1970. 44.

As a lead we obtained a bag used by Nippon Aerosil, therefore we are enclosing it for you.

Relating to your question of what toxic effects can be expected from the handling of paper containing polychlorinated biphenyls, we have no Information that would lead us to believe that any problems exist.

The Court's decision, issued January 31, 1975, allows 60 days lead time for implementation of the Standard.

Severe exposure may lead to more serious effects.

You can speak to our hygiene efforts over the years pointing out our concern not only for asbestos but also lead.

These facts lead to the conclusion that the compound was being contaminated in the dicer.

No 7475 A111-043-01 CONCENTRATION IN PPM WEIGHT ELEMENT Uranium Thorium Bismuth Lead Thallium @ Mercury Gold Platinum Iridium ~ Osmium Rhenium Tungsten Tantalum CONC 6 0.8 2 0.02 8 ELEMENT Terbium CONC 1 Gadolinium 2 Europium Samarium Samarium 0.7 . 2 Neodymium = 5 Praseodymium 1 Cerium 7 Lanthanum Barium 11 = ss 17 Cesium = 0.3 Iodine Tellurium Antimony 2 ELEMENT Ruthenium CONC ELEMENT Vanadium CONC 24 Molybdenum 1 Niobium ** = Titanium = MC Scandium 3 Zirconium 8 Calcium Calcium MC Yttrium 16 Potassium = 650 Strontium 8 Chlorine 67 Rubidium 2 Sulfur 30 Bromine 3 Phosphorus MC Selenium 5 Silicon MC Arsenic 0.8 Aluminum MC Germanium 3 Magnesium MC _ Gallium < Sodium MC Zinc 13 Fluorine MC Hafnium 3 Lutetium 2 Tin Indium STD Copper Nickel 2 Oxygen NR 26 Nitrogen Nitrogen NR Ytterbium 7 Thulium 1 Cadmium Silver Cobalt Iron 2 Carbon MC Boron NR 0.3 Erbium 3 D?

Industrial hygiene engineering has succeeded in devising procedures for safely processing and using many potentially hazardous materials, such as beryllium, uranium ore, silica sand, lead, mercury, etc.

The proposed >B' machine test will be cancelled. 1.6- PAP will investigate the production problems of using the hammermilled dry scrap and will review green scrap usege. 1.7- Vollastonlte supply and health hazards were discussed. 1.8- PAP reported that the Premizing station was about 3 months lead time, but that Stage 1 (drumming of bulk silica) was in progress. 1.9- PAP confirmed that Chicago and Mt.