This is an artificially created body of records dealing with four firms acquired by A.E. McKenzie Seed Co. Ltd. An administrative history for each company can be found below.
Custodial History
See fonds level description of custodial history of A. E. McKenzie Seed Co. Ltd.
Scope and Content
Included within the sub-series are financial records, correspondence, merger documents, miscellaneous documents and records. Not all of the companies contain the same categories of information. This series is sub divided into each of the major companies acquired by McKenzie Seeds throughout its years of operation. The sub-series include: (1) Brett-Young/Sabetha Seed Companies; (2) Steele Briggs Seed Company; (3) Pike and Co.; and (4) McFayden Seends.
Storage Location
RG 3 A.E. McKenzie Company fonds
McS 3 Acquisitions
Radiocarbon date reports have been scanned in multi-page PDF files.
History / Biographical
North Lauder Radiocarbon Date report by Beta Analytic Inc. for Flintstone Hill #109900.
Radiocarbon dating
The technique of radiocarbon dating was developed by Willard Libby and his colleagues at the University of Chicago in 1949.
Radiocarbon dating is used to estimate the age of organic remains from archaeological sites. Organic matter has a radioactive form of carbon (C14) that begins to decay upon death. C14 decays at a steady, known rate of a half life of 5,730 years. The technique is useful for material up to 50,000 years. Fluctuations of C14 in the atmosphere can affect results so dates are calibrated against dendrochronology. Radiocarbon dates are calibrated to calendar years.
Dates are reported in radiocarbon years or Before Present. Before Present refers to dates before 1950. The introduction of massive amounts of C14, due to atomic bomb and surface testing of atomic weapons, has widely increased the standard deviation on all dates after A.D. 1700 causing these dates to be unreliable.
Accelerated mass spectrometry can more accurately measure C14 with smaller samples and can date materials to 80,000 years.
Scope and Content
Sub sub series contains radiocarbon dates from: Atkinson site and Flintstone Hill.
