Abstract: Cuttings from drilling through or into natural rock and/or soil can be incorporated into useful, high quality load-bearing structures such as vehicle roads and pads for deep drilling rigs. This process recycles a material previously regarded as valueless at best and often as a pollution hazard. The cuttings, optionally mixed with drilling mud and/or soil, are converted to the useful structures by pozzolanic and/or cementitious reactions after being mixed with suitable other materials and/or are bonded into the useful structures by asphaltic materials.

Abstract: Mixing devices and processes that make it possible to mix flowable finely divided solid particles with liquids (and/or slurries of solids in liquids) contained in an open top container outdoors under windy conditions, with reduced or eliminated dusting from entrainment of the flowable finely divided solids by the wind, utilize a mixing device with a dust-tight housing open at its bottom and partially immersed below the surface of the liquid, an inlet port on the housing for the finely divided solids, an outlet port on the housing for escape of air displaced by liquids flowing through an opening into the immersed portion of the housing, and, inside the housing, a driven impeller that causes the actual mixing.