Comprehensive dataset of 22 Law libraries in Massachusetts, United States as of June, 2025. Includes verified contact information (email, phone), geocoded addresses, customer ratings, reviews, business categories, and operational details. Perfect for market research, lead generation, competitive analysis, and business intelligence. Download a complimentary sample to evaluate data quality and completeness.

Comprehensive dataset of 26 Law schools in Massachusetts, United States as of June, 2025. Includes verified contact information (email, phone), geocoded addresses, customer ratings, reviews, business categories, and operational details. Perfect for market research, lead generation, competitive analysis, and business intelligence. Download a complimentary sample to evaluate data quality and completeness.

Comprehensive dataset of 8 Legal aid offices in Massachusetts, United States as of June, 2025. Includes verified contact information (email, phone), geocoded addresses, customer ratings, reviews, business categories, and operational details. Perfect for market research, lead generation, competitive analysis, and business intelligence. Download a complimentary sample to evaluate data quality and completeness.

This statistic shows the results of a survey among adult Americans on whether they think that new gun control laws will lead to less mass shootings. The survey was conducted in October 2017. During the survey, 21 percent of respondents stated they think that new gun control laws could reduce the number of mass shootings a great deal.

Antarctic ice provides an archive of Earths atmospheric composition over time. It therefore records evidence of human impact on the atmosphere. Lead is a toxic element, whose isotopic fingerprint can also be used as a tracer. This project will investigate a 400 year Pb pollution record in ice from Law Dome.

From the abstracts of the referenced papers:

Techniques for Pb measurements have reached the stage where Antarctic ice with sub-picogram per gram concentrations can be reliably analysed for isotopic composition. Here, particular attention has been given to measuring the quantity of Pb added during the decontamination and sample storage stages of the sample preparation process because of their impact on accuracy at low concentrations. These stages, including the use of a stainless steel chisel for the decontamination, contributed ~5.2pg to the total sample analysed, amounting to a concentration increase of ~13fg per gram, which is significantly less than expected. Consequently the corrections to the isotopic ratios and concentration were also smaller. Other contributions to the blank, such as Pb fallout onto critical working areas in the HEPA-filtered laboratories, were also relatively small as was the amount of Pb leached from preconditioned perfluoroalkoxy (PFA) beakers during sample processing. The ion source contributed typically 89plus or minus 19 fg to the blank. Although this was relatively large, its influence depended upon the amount of Pb available for analysis and it had the greatest impact when small volumes of samples with a very low concentration were analysed. A 15 months investigation of the leaching characteristics of Pb from a low-density polyethylene (LDPE) sample storage bottle showed 11 fg per cm per cm per day was released immediately following the initial 2 months cleaning process, but this decreased to immeasurable values after a further 3 months of cleaning.

Lead isotopic compositions and Pb and Ba concentrations have been measured in ice cores from Law Dome, East Antarctica, covering the past 6500 years. 'Natural' background concentrations of Pb (~0.4 pg/g) and Ba (~1.3 pg/g) are observed until 1884 AD, after which increased Pb concentrations and lowered 206Pb/207Pb ratios indicate the influence of anthropogenic Pb. The isotopic composition of 'natural' Pb varies within the range 206Pb/207Pb=1.20-1.25 and 208Pb/207Pb=2.46-2.50, with an average rock and soil dust Pb contribution of 8-12%. A major pollution event is observed at Law Dome between 1884 and 1908 AD, elevating the Pb concentration four-fold and changing 206Pb/207Pb ratios in the ice to ~1.12. Based on Pb isotopic systematics and Pb emission statistics, this is attributed to Pb mined at Broken Hill and smelted at Broken Hill and Port Pirie, Australia. Anthropogenic Pb inputs are at their greatest from ~1900 to ~1910 and from ~1960 to ~1980. During the 20th Century, Ba concentrations are consistently higher than 'natural' levels and are attributed to increased dust production, suggesting the influence of climate change and/or changes in land coverage with vegetation.

The fields in this dataset are:

Sample Date 206Pb/207Pb 208Pb/207Pb 206Pb/204Pb Pb concentration Ba concentration

Petition subject: Fugitive slave laws Original: http://nrs.harvard.edu/urn-3:FHCL:11858305 Date of creation: (unknown) Petition location: Lawrence Selected signatures:Samuel NuttonSamuel E. CollinsNathaniel Simonds Total signatures: 24 Legal voter signatures (males not identified as non-legal): 12 Female signatures: 5 Other male signatures: 4 Unidentified signatures: 3 Female only signatures: No Identifications of signatories: inhabitants, legal voters, other persons, [females], [other males] Prayer format was printed vs. manuscript: Printed Signatory column format: column separated Additional non-petition or unrelated documents available at archive: no additional documents Additional archivist notes: Not sure on lead petitioner Location of the petition at the Massachusetts Archives of the Commonwealth: Senate Unpassed 1851, Docket 13162 Acknowledgements: Supported by the National Endowment for the Humanities (PW-5105612), Massachusetts Archives of the Commonwealth, Radcliffe Institute for Advanced Study at Harvard University, Center for American Political Studies at Harvard University, Institutional Development Initiative at Harvard University, and Harvard University Library.