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.
Studies to determine the acute toxicity of spinosad under laboratory conditions were conducted to generate LD50 or LC50 values. for oral and contact routes of administration. These demonstrated that spinosad was highly toxic to worker honeybees under worst. case laboratory conditions. Residue tests conducted under laboratory conditions using worker honeybees exposed to treated foli-. age, indicated that dry product residues were harmless.