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and 4 Lasers 1. Interlocks on protective housing 2. Service access panel present 3. Limited access jewelry while laser is operating 6. Viewing portals present where MPE is exceeded F. Class 4 Lasers
http://www.csbsju.edu/documents/ehs/forms/pdfs/laserchecklist.pdf
Hildebrand de Hemptimme visits St. John's, 1910. v.3, p.250 Fidelis von Stotzingen visits St. John's 1926. v.4, p.19 Brother Benno's bell in turret of Stone House at lake location, 1866. v.1, p.69
http://www.csbsju.edu/documents/sju archives/index hoffman mission/index history of sj abbey, univ, missions 1856-1931 box 2554 f7.xlsx

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