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Senghenydd Colliery Disaster
The Senghenydd colliery disaster, also known as the Senghenydd explosion ( cy, Tanchwa Senghennydd), occurred at the Universal Colliery in Senghenydd, near Caerphilly, Glamorgan, Wales, on 14 October 1913. The explosion, which killed 439 miners and a rescuer, is the worst mining accident in the United Kingdom. Universal Colliery, on the South Wales Coalfield, extracted steam coal, which was much in demand. Some of the region's coal seams contained high quantities of firedamp, a highly explosive gas consisting of methane and hydrogen. In an earlier disaster in May 1901, three underground explosions at the colliery killed 81 miners. The inquest established that the colliery had high levels of airborne coal dust, which would have exacerbated the explosion and carried it further into the mine workings. The cause of the 1913 explosion is unknown, but the subsequent inquiry thought the most likely cause was a spark from underground signalling equipment that could have ignited any ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ILN – Senghenydd Colliery Disaster 3
ILN can refer to: * International Lunar Network * International Location Number, see Global Location Number * Wilmington Air Park, formerly known as Airborne Airpark * ''The Illustrated London News'' * International Lawyer's Network {{Disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shilling (British Coin)
The British shilling, abbreviated "1/-", was a unit of currency and a denomination of sterling coinage worth of one pound, or twelve pence. It was first minted in the reign of Henry VII as the testoon, and became known as the shilling, from the Old English , sometime in the mid-16th century. It circulated until 1990. The word ''bob'' was sometimes used for a monetary value of several shillings, e.g. "ten-bob note". Following decimalisation on 15 February 1971 the coin had a value of five new pence, and a new coin of the same value but labelled as "five new pence" or "five pence" was minted with the same size as the shilling until 1990, after which the shilling no longer remained legal tender. It was made from silver from its introduction in or around 1503 until 1946, and thereafter in cupronickel. Before Decimal Day in 1971, sterling used the Carolingian monetary system ("£sd"), under which the largest unit was a pound (£) divided into 20 shillings (s), each of 12 pence (d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferndale Colliery
Ferndale Colliery was a series of nine coal mines, located close to the village of Ferndale, Rhondda Cynon Taf in the Rhondda Valley, South Wales. History The first development was by David Davis of Blaengwawr from 1857, in accessing the high quality steam coal and at a greater depth, he spurred others into tapping into the "Black Gold". Over the following 50 years, eight further pits were created. Ferndale No.1 was developed on the land of the farm at Blaenllechau, within the borough of Ferndale. The following four pits were also within the village borough of Ferndale, while the last four were within the boundaries of neighbouring village Tylorstown. These later pits were also referred to as Tylorstown No.6 through No.9. However, later consolidation within the areas mining and pit complex eventually connected all nine of the mines. Hence the whole development was called Ferndale Colliery, from the completion of No.9 in 1907 by D. Davis & Sons Ltd. onwards. This allowed the comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Risca
Risca ( cy, Rhisga) is a town in the Caerphilly County Borough and the Historic counties of Wales, historic boundaries of Monmouthshire (historic), Monmouthshire in south-east Wales. Risca has a railway station, opened on the Ebbw Valley Railway in February 2008, after a gap of 46 years. It is split into two Community (Wales), communities; Risca East and Risca West. It has a population of 11,700. The town is now part of the Cardiff Capital Region which has a combined population of 1,543,293. Cardiff the capital of Wales can be reached in under 28 minutes from the nearby railway station of Risca and Pontymister station which reopened in 2008 after a gap of nearly 60 years. The town lies at the south-eastern edge of the South Wales Coalfield and the town has been shaped by mining, together with other heavy industries, for many centuries. Risca is home to Ty-Sign, which is a large housing estate built in the early 1960s as a satellite village for the then new Llanwern steelworks. R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymmer Colliery Explosion
The Cymmer Colliery explosion occurred in the early morning of 15 July 1856 at the Old Pit mine of the Cymmer Colliery near Porth (lower Rhondda Valley), Wales, operated by George Insole & Son. The underground gas explosion resulted in a "sacrifice of human life to an extent unparalleled in the history of coal mining of this country" in which 114 men and boys were killed. Thirty-five widows, ninety-two children, and other dependent relatives were left with no immediate means of support. The immediate cause of the explosion was defective mine ventilation and the use of naked flames underground. Factors contributing to the explosion included the rapid development of the mine to meet increased demand for coal, poor mine safety practices allowed by management despite official warnings, and deteriorating working relationships between miners and management. After the explosion, mine owner James Harvey Insole and his officials were accused of "neglecting the commonest precaution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypoxia (medical)
Hypoxia is a condition in which the body or a region of the body is deprived of adequate oxygen supply at the tissue level. Hypoxia may be classified as either '' generalized'', affecting the whole body, or ''local'', affecting a region of the body. Although hypoxia is often a pathological condition, variations in arterial oxygen concentrations can be part of the normal physiology, for example, during strenuous physical exercise.. Hypoxia differs from hypoxemia and anoxemia, in that hypoxia refers to a state in which oxygen present in a tissue or the whole body is insufficient, whereas hypoxemia and anoxemia refer specifically to states that have low or no oxygen in the blood. Hypoxia in which there is complete absence of oxygen supply is referred to as anoxia. Hypoxia can be due to external causes, when the breathing gas is hypoxic, or internal causes, such as reduced effectiveness of gas transfer in the lungs, reduced capacity of the blood to carry oxygen, compromised gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboxyhemoglobin
Carboxyhemoglobin (carboxyhaemoglobin BrE) (symbol COHb or HbCO) is a stable complex of carbon monoxide and hemoglobin (Hb) that forms in red blood cells upon contact with carbon monoxide. Carboxyhemoglobin is often mistaken for the compound formed by the combination of carbon dioxide (carboxyl) and hemoglobin, which is actually carbaminohemoglobin. Carboxyhemoglobin terminology emerged when carbon monoxide was known by its historic name, "carbonic oxide", and evolved through Germanic and British English etymological influences; the preferred IUPAC nomenclature is carbonylhemoglobin. The average non-smoker maintains a systemic carboxyhemoglobin level under 3% COHb whereas smokers approach 10% COHb. The biological threshold for carboxyhemoglobin tolerance is 15% COHb, meaning toxicity is consistently observed at levels in excess of this concentration. The FDA has previously set a threshold of 14% COHb in certain clinical trials evaluating the therapeutic potential of carbon mono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haemoglobin
Hemoglobin (haemoglobin BrE) (from the Greek word αἷμα, ''haîma'' 'blood' + Latin ''globus'' 'ball, sphere' + ''-in'') (), abbreviated Hb or Hgb, is the iron-containing oxygen-transport metalloprotein present in red blood cells (erythrocytes) of almost all vertebrates (the exception being the fish family Channichthyidae) as well as the tissues of some invertebrates. Hemoglobin in blood carries oxygen from the respiratory organs (''e.g.'' lungs or gills) to the rest of the body (''i.e.'' tissues). There it releases the oxygen to permit aerobic respiration to provide energy to power functions of an organism in the process called metabolism. A healthy individual human has 12to 20grams of hemoglobin in every 100mL of blood. In mammals, the chromoprotein makes up about 96% of the red blood cells' dry content (by weight), and around 35% of the total content (including water). Hemoglobin has an oxygen-binding capacity of 1.34mL O2 per gram, which increases the total blood oxygen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bituminous Coal
Bituminous coal, or black coal, is a type of coal containing a tar-like substance called bitumen or asphalt. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the seams. It is typically hard but friable. Its quality is ranked higher than lignite and sub-bituminous coal, but lesser than anthracite. It is the most abundant rank of coal, with deposits found around the world, often in rocks of Carboniferous age. Bituminous coal is formed from sub-bituminous coal that is buried deeply enough to be heated to or higher. Bituminous coal is used primarily for electrical power generation and in the steel industry. Bituminous coal suitable for smelting iron (''coking coal'' or ''metallurgical coal'' ) must be low in sulfur and phosphorus. It commands a higher price than other grades of bituminous coal (thermal coal) used for heating and power generation. Within the coal mining industry, this type of coal is kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthracite
Anthracite, also known as hard coal, and black coal, is a hard, compact variety of coal that has a submetallic luster. It has the highest carbon content, the fewest impurities, and the highest energy density of all types of coal and is the highest ranking of coals. Anthracite is the most metamorphosed type of coal (but still represents low-grade metamorphism), in which the carbon content is between 86% and 97%. The term is applied to those varieties of coal which do not give off tarry or other hydrocarbon vapours when heated below their point of ignition. Anthracite ignites with difficulty and burns with a short, blue, and smokeless flame. Anthracite is categorized into standard grade, which is used mainly in power generation, high grade (HG) and ultra high grade (UHG), the principal uses of which are in the metallurgy sector. Anthracite accounts for about 1% of global coal reserves, and is mined in only a few countries around the world. The Coal Region of northeastern P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Short Ton
The short ton (symbol tn) is a measurement unit equal to . It is commonly used in the United States, where it is known simply as a ton, although the term is ambiguous, the single word being variously used for short, long, and metric ton. The various tons are defined as units of mass.Butcher, Crown and Gentry, NIST Special Publication 1038, The International System of Units (SI) – Conversion Factors for General Use, 2006 They are sometimes used as units of weight, the force exerted by a mass at standard gravity (e.g., short ton-force). One short ton exerts a weight at one standard gravity of 2,000 pound-force (lbf). United States In the United States, a short ton is usually known simply as a "ton", without distinguishing it from the tonne (), known there as the "metric ton", or the long ton also known as the "imperial ton" (). There are, however, some U.S. applications where unspecified ''tons'' normally mean long tons (for example, naval ships) or metric tons (world grain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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