A long-term follow-up of workers exposed to beryllium.

ABSTRACT The relationship of features of beryllium disease to the estimated exposure to beryllium has been investigated over a 30-year period at a factory manufacturing beryllium products. The factory opened in 1952. Of the 146 men who had worked there for more than six months up to 1963, 89% were seen at that time and were followed up in 1973.

Neurological complications after a single severe exposure to toluene di-isocyanate.

A total of 23 men complained of neurological symptoms after a single severe exposure to toluene di-isocyanate. Effects of exposure were immediate in five men and consisted of euphoria, ataxia, and loss of consciousness. These men and nine others complained of headache, difficulty in concentration, poor memory, and confusion during the next three weeks.

Accidental exposure to isocyanate fumes in a group of firemen.

A total of 35 firemen involved in fighting a fire in a factory in which polyurethane foam was made were exposed to fumes of toluene di-isocyanate from two large storage tanks which were damaged during the fire, resulting in massive spillage. Most of the men experienced symptoms during the fire or during the three weeks after it. The symptoms were mainly gastrointestinal, respiratory, or neurological.

A study of the acute and chronic changes in ventilatory capacity of workers in Lancashire cotton mills.

25-36. A prospective study of workers in 14 cotton and two man-made fibre spinning mills in Lancashire was carried out over a three-year period. A questionnaire on respiratory symptoms was completed at the start of the survey and again two years later.

An annual cycle in the ventilatory capacity of men with pneumoconiosis and of normal subjects.

The forced expiratory volume over 0·75 second (F.E.V.

Byssinosis: the acute effect on ventilatory capacity of dusts in cotton ginneries, cotton, sisal, and jute mills.

Studies of ventilatory capacity change in small groups of employees during a shift in a cotton mill and in three cotton ginneries in Uganda, a sisal factory in Kenya, and a jute mill in England, have demonstrated that an effect is produced by the dust in the cotton mill and in a very dusty ginnery but not in two other less dusty ginneries. No significant effect was detected in the sisal factory or in the jute mill despite much higher dust concentrations than in the cotton mill. The dust sampling instruments gave the weight in three sizes: Coarse (>2 mm.