dust explosion
91Disasters — ▪ 2009 Introduction Aviation January 23, Poland. A Spanish built CASA transport plane carrying members of the Polish air force home from a conference on flight safety in Warsaw crashes near the town of Miroslawiec; all 20 aboard are killed …
92Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
93Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
94Pebble bed reactor — Sketch of a pebble bed reactor in Italian …
95Space debris — populations seen from outside geosynchronous orbit (GEO). Note the two primary debris fields, the ring of objects in GEO, and the cloud of objects in low earth orbit (LEO) …
96Ballincollig Royal Gunpowder Mills — was one of three Royal gunpowder mills that manufactured gunpowder for the British Government. The Ballincollig gunpowder mills were opened in the late 18th Century; and were bought by the Board of Ordnance in 1804. They are situated in the town… …
97World Trade Center controlled demolition conspiracy theories — Aerial view of the debris field of the North Tower, 6 WTC, and 7 WTC (upper right) The World Trade Center controlled demolition conspiracy theory is a conspiracy theory which contends that the collapse of the World Trade Center was not caused by… …
98space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
99meteor and meteoroid — ▪ astronomy Introduction respectively, a glowing streak in the sky (meteor) and its cause, which is a relatively small stony or metallic natural object from space (meteoroid) that enters Earth s atmosphere and heats to incandescence. In modern… …
100Springhill mining disaster — Mine shed at Springhill, NS The term Springhill mining disaster can refer to any of three separate Canadian mining disasters which occurred in 1891, 1956, and 1958 in different mines within the Springhill coalfield, near the town of Springhill in …
