center holes
101Shaft construction — concerns the building of vertical openings such as Raises and Shafts. Shafts are vertical openings used for supplying equipment, personnel, and support systems to the horizontal tunnel where the pipeline is installed. They can be temporary or… …
102Trou noir — Pour les articles homonymes, voir Trou noir (homonymie). En astrophysique, un trou noir est un corps dont le champ gravitationnel est si intense qu’il empêche toute forme de matière ou de rayonnement de s’en échapper (à l exception notable de la… …
103Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
1042010 Copiapó mining accident — Copiapó mining accident redirects here. For the 2006 accident in the Carola Agustina mine, see 2006 Copiapó mining accident. 2010 Copiapó mining accident Rescue efforts at San José Mine near Copiapó, Chile on 10 August 2010 Date …
105Vallejo, California — City of Vallejo   City   Vallejo City Hall and County Building …
106Everglades National Park — IUCN Category Ib (Wilderness Area) …
107Sagittarius A* — Starbox short name=Sagittarius A* epoch=J2000 constell=Sagittarius ra=RA|17|45|40.045 [http://simbad.u strasbg.fr/sim id.pl?protocol=html Ident=Sagittarius+A* NbIdent=1 Radius=10 Radius.unit=arcmin CooFrame=FK5 CooEpoch=2000 CooEqui=2000… …
108Animal testing on non-human primates — Image taken inside Covance Experiments involving non human primates (NHPs) include toxicity testing for medical and non medical substances; studies of infectious disease, such as HIV and hepatitis; neurological studies; behavior and cognition;… …
109Outline of astronomy — Mauna Kea in Hawaii is one of the world s premier observatory sites. Pictured is the W. M. Keck Observatory, an optical interferometer. The following outline is provided as an overview of and topical guide to astronomy: Astronomy – studies the… …
110Time travel — This article details time travel itself. For other uses, see Time Traveler. Time travel is the concept of moving between different moments in time in a manner analogous to moving between different points in space, either sending objects (or in… …
