The coolies, earth-coloured and mute, crouched reverently some twenty or thirty yards away, and the Babu, the slack of his thin gear snapping like a marking-flag in the chill breeze, stood by with an air of happy proprietorship.
Inhaling crystalline silica can lead to serious, sometimes fatal illnesses including silicosis, lung cancer, tuberculosis (in those with silicosis), and chronic obstructive pulmonary disease (COPD). In addition, silica exposure has been linked to other illnesses including renal disease and other cancers.
Silica (quartz) Silica, SiO 2, is a white or colorless crystalline compound found mainly as quartz, sand, flint, and many other minerals. Silica is an important ingredient to manufacture a wide variety of materials.Quartz; Quartz is the most abundant silica mineral.Pure Quartz is colorless and transparent.ilica (quartz); Silica, or silicon dioxide (SiO 2), occurs in either a crystalline or non-crystalline (amorphous) form. Quartz is a colourless, odourless, non-combustible solid and a component of many mineral dusts. Silica(quartz);Silica(quartz) is an industrial material, its sand is often used for glass making.