A wide variety of names are commonly used for petrified wood. Fossilized wood is a general term for wood that has been petrified or preserved by other methods of fossilization. Opalized wood is petrified wood that has been replaced by opal, an amorphous form of silica.
DHS redirects here. For other uses, see DHS (disambiguation). The United States Department of Homeland Security (DHS) is a cabinet department of the United States federal government with responsibilities in public security, roughly comparable to the interior or home ministries of other countries.
One of the Committeeâs primary areas of jurisdiction is the protection of the United States homeland and, specifically, oversight of the Department of Homeland Security. The Committee has worked in a bipartisan manner over the years to ensure that DHS develops an effective approach to preparedness for, prevention of, and recovery from natural disasters and terrorist attacks.