Abstract: The invention concerns intermediates having the formula ##STR1## wherein R is 2-propylpentyl optionally with one, two or three internal unsaturated bonds, or 2-substituted-2-propylpentyl optionally with one or two internal unsaturated bonds wherein the 2-substituent is a leaving group.

Abstract: What is provided is first connectably engaging the first end of a water line onto the outflow end of the whirlpool bath; providing a source of pressurized water, for example from a hose onto the second end of the flowline, so that introduction of water from the hose introduces the water into the line and up through the outflow pipe into the pump which in turn would be expelled from the intake ports around the base of the mechanism; providing a second line forming a juncture with the fluid line, the second line capable of adapting a volume of cleaning solution thereunto, so that upon introduction of fluid into the line from the hose, the cleaning solution may in turn be introduced into the flow of the water into the mechanism to provide a cleaning solution or disinfectant through the mechanism; providing a valving means for controlling the amount of flow of cleansing solution or disinfectant into the fluid flow line; and providing a means for measuring quantity of disinfectant being introduced into the line pe

Abstract: Sintered, spherical composite pellets or particles comprising one or more clays as a major component and bauxite, alumina, or mixtures thereof, are described, along with the process for their manufacture. The pellets may have an alumina-silica (Al.sub.2 O.sub.3 --SiO.sub.2) ratio from about 9:1 to about 1:1 by weight. The use of such pellets in hydraulic fracturing of subterranean formations is also described.