Between 1922 and 1940, the National Bureau of Standards (NBS) conducted a long-term investigation into the corrosion of bare steel and iron, pipes buried underground at 47 sites representing different soil types in the United States. Following the passage of the 2004 Pipeline Safety Improvement Act, the Department of Transportation's Office of Pipeline Safety requested that NIST review and reanalyze the data from the NBS study using modern statistical analysis tools. For this analysis, NIST compiled an updated database from the data in the publications by K. H. Logan (i.e.

The National Institute of Standards and Technology, as part of its report on the collapse of the World Trade Center, characterized many important steels recovered from the buildings to provide stress-strain models to analyze the impact, fires, and resulting collapse. Those tests represent a large additional data set that can be used for modeling the response of steel structures to fire.

Estimates of the Total Resident Population and Resident Population Age 18 Years and Older for the United States, States, and Puerto Rico // File: State Characteristics Population Estimates // Source: U.S. Census Bureau, Population Division // Note: The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions.

Annual Population Estimates, Estimated Components of Resident Population Change, and Rates of the Components of Resident Population Change for the United States, States, and Puerto Rico // File: National and State Population Estimates // Source: U.S. Census Bureau, Population Division // Note: Total population change includes a residual. This residual represents the change in population that cannot be attributed to any specific demographic component.

Annual Resident Population Estimates for Puerto Rico Municipios: April 1, 2010 to July 1, 2013 // File: 7/1/2013 Puerto Rico Municipio Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: March 2014 // Note: The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions. All geographic boundaries for these population estimates are as of January 1, 2013.

Annual Resident Population Estimates, Estimated Components of Resident Population Change, and Rates of the Components of Resident Population Change for States and Counties: April 1, 2010 to July 1, 2013 // File: 7/1/2013 County Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: March 2014 // Note: Total population change includes a residual. This residual represents the change in population that cannot be attributed to any specific demographic component.

Subcounty Resident Population Estimates: April 1, 2010 to July 1, 2013 // File: 7/1/2013 Subcounty Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: May 2014 // Note: The estimates are based on the 2010 Census and reflect changes to the April 1, 2010 population due to the Count Question Resolution program and geographic program revisions.

The survey covers all public school systems that provide elementary or secondary education (PK-12). The data include revenue by source (local property tax, monies from other school systems, private tuition and transportation payments, school lunch charges, direct state aid, and federal aid passed through the state government), expenditure by function and object (instruction, support service functions, salaries, and capital outlay), indebtedness, and cash and investments.

The American Community Survey (ACS) is a nationwide survey designed to provide communities a fresh look at how they are changing. The ACS replaced the decennial census long form in 2010 and thereafter by collecting long form type information throughout the decade rather than only once every 10 years. Questionnaires are mailed to a sample of addresses to obtain information about households -- that is, about each person and the housing unit itself.

Annual County Resident Population Estimates for 5 Race Groups (5 Race Alone or in Combination Groups) by Five-Year Age Groups, Sex, and Hispanic Origin: April 1, 2010 to July 1, 2013 // File: 7/1/2013 County Characteristics Resident Population Estimates // Source: U.S. Census Bureau, Population Division // Release Date: June 2014 // Note: 'In combination' means in combination with one or more other races. The sum of the five race groups adds to more than the total population because individuals may report more than one race.