Abstract: Aspects herein are directed to an upper-body garment that facilitates upright sleeping. The garment includes an inner hood with a mesh elastic panel that is adapted to be positioned across the wearer's forehead helping to anchor the inner hood on to the wearer's head. The inner hood includes a low stretch or no stretch center panel. The center panel extends from the mesh elastic panel, down the center back of the inner hood, and further extends on to a back aspect of a torso portion of the garment where it forms a center portion of the back of the upper-body garment. Because the center panel has low stretch or no stretch, the wearer's head and neck are held in an upright or generally upright position when the inner hood is donned. The upper-body garment further includes a large volume outer hood positioned external to the inner hood.

Abstract: The ore is subjected to nitric acid leaching and the leach solution is heated to a temperature at which one of the additional sulfur and iron values is selectively insolubilized with respect to the solution, while the other is maintained in solution for subsequent separation from the liquor after the insolubles have been removed and the liquor has been neutralized. In addition, in one embodiment of the invention the heating and acid neutralization steps are controlled within certain prescribed limits to make it possible to remove the metals from the liquor by solvent extraction without the problem of lasting precipitates forming in the liquor and fouling the extraction process. Where there is a sizable amount of dissolved iron in the liquor, the liquor may be subjected to autoclaving at a temperature above about 149.degree.C (300.degree.F) to precipitate the iron as the oxide thereof. This effect is possible even where the liquor is high in sulfate concentration.