Tungsten-carbide/cobalt based hard metals II.

Final report on carcinogens background document for cobalt-tungsten carbide: powders and hard metals.

Atomic tungsten for ultrafast hard X-ray generation.

High-resolution X-ray absorption measurements (with an accuracy of +/-0.3 eV) of ZnSO(4) (aq) were performed with ultrafast selected energy X-ray absorption spectroscopy (USEXAS) using a laser-driven tungsten target X-ray source. The results were used to determine the absolute spectral positions of characteristic emission lines. By comparing these positions to those predicted for the line emiss...

Hard metals at workplaces: Exposure and evaluation

Hard metals are an important material due to their specific properties, such as high degree of hardness and resistance to abrasive wear, and they are in wide use today. There are indications that hard metal aerosols can endanger human health. Discussions are ongoing as to how to categorize hard metals as hazardous as a result. This categorization will require deciding in particular how to deter...

Possible role of tungsten oxide whiskers in hard-metal pneumoconiosis.

1310 Communications to the Editor cuff inflation is seldom seen, and an increase of 1 ml or less in cuff volume can markedly increase LW? What can be done to minimize the possibility of cuff-induced tracheal damage? First, select the largest endotracheal tube that can be inserted atraumatically. A greater cross-sectional area ratio between the tube and the trachea means less air must be injecte...

Lung cancer mortality in a site producing hard metals.

OBJECTIVES To study the mortality from lung cancer from exposures to hard metal dust at an industrial site producing hard metals--pseudoalloys of cobalt and tungsten carbide--and other metallurgical products many of which contain cobalt. METHODS A historical cohort was set up of all subjects who had worked for at least 3 months on the site since its opening date in the late 1940s. A full job ...