Digging (English Wikipedia)

W. Ed Wightman, Frank Jalinoos, Philip Sirles, and Kanaan Hanna (2003). "6.2.3 Determining the Rippability of Rocks". Application of Geophysical Methods to Highway Related Problems. Federal Highway Administration, Central Federal Lands Highway Div. pp. 318–322.{{cite book}}: CS1 maint: multiple names: authors list (link)(accessed 17-Sep-2009)

dailyrecord.com (Global: low place; English: low place)

"Boonton company admits criminal fault in deaths of two workers in trench collapse". dailyrecord.com. Retrieved 20 January 2018.

doi.org (Global: 2^nd place; English: 2^nd place)

Tegel W, Elburg R, Hakelberg D, Stäuble H, Büntgen U (2012). "Early Neolithic Water Wells Reveal the World's Oldest Wood Architecture". PLOS ONE. 7 (12) e51374. Bibcode:2012PLoSO...751374T. doi:10.1371/journal.pone.0051374. PMC 3526582. PMID 23284685.
F. MacGregor; R. Fell; G. R. Mostyn; G. Hocking & G. McNally (1994). "The estimation of rock rippability". Quarterly Journal of Engineering Geology & Hydrogeology. 27 (2): 123–144. doi:10.1144/GSL.QJEGH.1994.027.P2.04. S2CID 129440512.
D. M. McCann & P.J. Fenning (1995). "Estimation of rippability and excavation conditions from seismic velocity measurements". Geological Society, London, Engineering Geology Special Publications. 10: 335–343. doi:10.1144/GSL.ENG.1995.010.01.29. S2CID 129125257.

gov.on.ca (Global: 3,455^th place; English: 1,821^st place)

labour.gov.on.ca

Labour, Government of Ontario, Ministry of. "Excavation Hazards (Fact Sheet)". www.labour.gov.on.ca. Retrieved 20 January 2018.{{cite web}}: CS1 maint: multiple names: authors list (link)

nih.gov (Global: 5^th place; English: 5^th place)

ncbi.nlm.nih.gov

Tegel W, Elburg R, Hakelberg D, Stäuble H, Büntgen U (2012). "Early Neolithic Water Wells Reveal the World's Oldest Wood Architecture". PLOS ONE. 7 (12) e51374. Bibcode:2012PLoSO...751374T. doi:10.1371/journal.pone.0051374. PMC 3526582. PMID 23284685.

pubmed.ncbi.nlm.nih.gov

Tegel W, Elburg R, Hakelberg D, Stäuble H, Büntgen U (2012). "Early Neolithic Water Wells Reveal the World's Oldest Wood Architecture". PLOS ONE. 7 (12) e51374. Bibcode:2012PLoSO...751374T. doi:10.1371/journal.pone.0051374. PMC 3526582. PMID 23284685.

nytimes.com (Global: 7^th place; English: 7^th place)

Wilford, John Noble (December 16, 2013). "Neanderthals and the Dead". The New York Times. Retrieved December 17, 2013.

osha.gov (Global: 5,777^th place; English: 3,669^th place)

"Trenching and Excavation Safety". www.osha.gov. Retrieved 20 January 2018.

sandandgravel.com (Global: low place; English: low place)

Design of a monitoring protocol/plan for sand borrow areas, Dredging News Online, 7 January 2000

semanticscholar.org (Global: 15^th place; English: 8^th place)

api.semanticscholar.org

F. MacGregor; R. Fell; G. R. Mostyn; G. Hocking & G. McNally (1994). "The estimation of rock rippability". Quarterly Journal of Engineering Geology & Hydrogeology. 27 (2): 123–144. doi:10.1144/GSL.QJEGH.1994.027.P2.04. S2CID 129440512.
D. M. McCann & P.J. Fenning (1995). "Estimation of rippability and excavation conditions from seismic velocity measurements". Geological Society, London, Engineering Geology Special Publications. 10: 335–343. doi:10.1144/GSL.ENG.1995.010.01.29. S2CID 129125257.

ufl.edu (Global: 880^th place; English: 578^th place)

ehs.ufl.edu

"Trenching and Excavation Policy » Environmental Health & Safety » University of Florida". www.ehs.ufl.edu. Retrieved 20 January 2018.

waipadc.govt.nz (Global: low place; English: low place)

Ellen Cameron, Rod Clough (August 2019). "Cambridge, growth cell c4 structure plan: preliminary archaeological assessment" (PDF).
"draft Leamington Domain Masterplan" (PDF). Waipā District Council. 7 September 2023.

web.archive.org (Global: 1^st place; English: 1^st place)

"Evolving in their graves: early burials hold clues to human origins - research of burial rituals of Neanderthals". Science News. 2001-12-15. Archived from the original on September 25, 2004. Retrieved 2011-03-25.

Digging (English Wikipedia)

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ncbi.nlm.nih.gov

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api.semanticscholar.org

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