Beryllium

USGS Minerals Information: Beryllium - Statistics and information on the worldwide supply, demand, and flow of beryllium.
http://minerals.usgs.gov/minerals/pubs/commodity/beryllium/

EnvironmentalChemistry.com: Beryllium - Atomic structure, chemical and physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/Be.html

Lenntech: Beryllium - Physical data, chemical properties, health and environmental effects.
http://www.lenntech.com/Periodic-chart-elements/Be-en.htm

It's Elemental: Beryllium - Basic physical and historical information.
http://education.jlab.org/itselemental/ele004.html

ChemicalElements.com: Beryllium - Basic information, atomic structure, and table of isotopes.
http://www.chemicalelements.com/elements/be.html

ChemGlobe: Beryllium - Electronic, thermal, and steric data along with basic information.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/4.html

Visual Elements: Beryllium - Image, discovery, uses, physical information, and key isotopes.
http://www.chemsoc.org/viselements/pages/beryllium.html

Peter Clerkin's - Beryllium - Some information about the element.
http://members.tripod.com/pcberyllium/index.html

WebElements: Beryllium - Extensive information on history, uses, occurrence, compounds, and properties of the element.
http://www.webelements.com/webelements/elements/text/Be/key.html

Wikipedia: Beryllium - Properties of the element, including its history, applications, and charateristics.
http://en.wikipedia.org/wiki/Beryllium

Radiochemistry of Beryllium - Full text of the monograph by A. W. Fairhall (Dept. of Chemistry, University of Washington, Seattle, Washington). [PDF] <small>(May, 1960)</small>
http://library.lanl.gov/cgi-bin/getfile?rc000045.pdf

LANL: Beryllium - Sources, properties, uses, and handling.
http://periodic.lanl.gov/elements/4.html