Bituminous coal dust

Coal, Anthracite Coal, Bituminous Coal Dust Coke, Petroleum Pitch Lignosulfonate Water Pitch Briquetter Disc Pelletizer TUrbulator Briquetter... 

Explosibility of semi-anthracite, low-volatile bituminous-coal, and medium-volatile bituminous-coal dusts. U. S. Bur. Mines Rept. Investigations 3489. 

SYNONYMS anthracite coal dust, anthracite particles, bituminous coal dust, coal facings, coal-milled, lignite coal dust, sea coal. 

Synonyms/Trade Names Anthracite coal dust, Bituminous coal dust, Lignite coal dust... 

The particulate matter in the lungs of rats exposed to aerosols (6.6 1.9 mg/m and 14.9 6.2 mg/m ) of high-potential coal workers pneumoconiosis bituminous coal dust from a mine in Appalachia for up to 20 months was contained almost entirely within the cytoplasm of alveolar macrophages so burdened with the material that cellular detail was obscured (Busch et al. 1981). 

Interferon induction by influenza virus in monkey kidney (LLC-MKj) cell monolayers pre-treated with coal dust was inhibited in relation to coal rank (Hahon 1983). Maximal inhibition of viral interferon induction was noted with high rank coal and the degression of this activity was related to coal s position in the carboniferous series anthracite, bituminous, subbituminous, lignite, and peat. Adsorption of poly(4-vinylpyridine-M-oxide) to bituminous coal dust from the Pittsburgh seam, Cambria County, Pa., not only occurred at a more rapid rate than to cell monolayers, but also less polymer was required to pretreat coal dust than cell mono-layers to achieve comparable amelioration of interferon production (Hahon 1976). 

The 2003 ACGIH threshold limit valuetime-weighted average (TLV-TWA) for bituminous or lignite coal dust is 0.9mg/m as respirable particulate a TLV-TWA of... 

Flame safety lamp as a detector for firedamp) 10)W.M-Schweickart, USP 2195842 (1940) CA 34, 5275 ( 1940) (App for empirical detnof dust in bituminous coal mines) 10a)J.Formanek, H ornikyVestnik 22,... 

Uses of bituminous coals as ingredients of expls are discussed under Coal Dust and Its Uses. Anthracitic (also known as hard coal) is a variety of coal contg the highest percent of fixed carbon (86 to 98%) and very little of volatile matter it is blk in color with a brilliant luster it burns with a short blue flame giving off very little smoke or odor used as household industrial fuel,... 

COAL DUST (less than 5% Si02)(Molecular formula and formula weight vary depending upon the specific coal type. Bituminous coal molecules have a mean molecular weight of 2000 or more.)... 

In addition to the economic and health hazards, coal dust can present serious explosion hazards. Certain bituminous coals and anthracites also continue to release measurable quantities of methane gas for days, and sometimes weeks, after they have been mined, which increases the possibility of explosion. Provision of efficient ventilation and restriction of electrical or thermal sources of ignition are required by regulation. 

In animal experiments the inhalation of soot increased mucus formation (Knauff 1867, Gross 1927). In rabbits and mongrel dogs kept underground in a bituminous coal mine (about 50 mg coal dust/m ) nearly continuously for up to 6 years, Schiller (1958) found a hypertrophy of the bronchial epithelium with a prevalence of goblet cells after 3 years exposure, but an atrophy at 6 years exposure. In the bronchioles, Clara cells showed an increase in apocrine secretion. 

---