JOSEPH E, XELLE H JEROME H.

He could not comment on the statistical significance of these results, or speculate as to mechanisms leading to this lowered fertility.

While presumably of high sen sitivity, this technique inevitably leads to serious questions as to the significance of minor physiologic deviations, which must be resolved by studies of morbidity or mortality.

Galvanized iron pipe can contribute cadmium lead and zinc to water. b.

KECEWEl, l (ISfjT PROPOSED STATEMENT TO OSHA PROM THE FIRESTONE PLASTICS COMPANY February 26, 1974- RECEIVED MAR 4 1974 F.

He also shoved peak lead levels of approximately 4.5 Eg/113 during bloving operations.

Presumably, substances such as lead, benzene, etc '"m1ld be coottollcd by establishing the Category, and then filling in expos,J:re limits, etc.

Nature Vo!.

Highlights of This Issue OSHA to propose permanent noise standard at 90 dBA.................................................Page 1 Now it's vinylidine chloride which may he carcinogenic................................................Page I Study shows defects in hospitals' worker health & safety programs................ .............Page 3 A case history of suspected carbon monoxide poisoning in factory...............................Page 4 Bunker Hill co. to sponsor lead study through ILZRO...................................................

He could not comment on the statistical significance of these results, or speculate as to mechanisms leading to this lowered fertility.

Skeletal muscle contains more magnesium than any other normal soft tissue,4 so the fact that the magnesium content of oat-cell type cancers was much larger than the content of nor mal human skeletal muscle (6-S + 0-4 mmol/kg, n=10)5 sup ports the hypothesis of abnormal, magnesium metabolism as sociated with oat-cell carcinoma leading to magnesium accumulation in the tumour.

Once adopted the proposed regulations q i A yj () /) U 4 3 3 h will undoubtedly lead to a flurry of regulatory activity, the focus of which will probably be NIOSH's list of suspect carcinogens, numbering in excess of 2400.

DEPARTMENT of health : ;.i p 'I'lUv.iMO, Ci.'

A simple hydride mig ration which would lead to dichloroacctyl chloride has low probability of occurring (12).

However, no particular pattern in the residen tial history could be identified that could lead to finding environ mental factors common to everyone.