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Edmund Longyear

Title: Log of the First Hole Drilled on the Mesabi
Type: Document
Date: 1889
Source: Minnesota Historical Society

Description: Longyear kept a log describing the drilling of the first hole on the Mesabi range. This log can show us the process of testing for ore and the amount of time that was needed.

Transcription:

Log of the First Diamond Drill hole on the Mesabi

1895 Feet Drilled
Daily Total
May 19 Shipped boiler, diamond drill, and outfit from Metropolitan, Michigan, to Duluth.
21 In Duluth.
22 Mitchell, Irwin, De Haas, and Spencer
here. Came to Mesaba.
23 Located place for drill near NW corner
sec. 34-59-14.
24 Cutting road from Okwanin or Allen to
location.
26 Cutting road to Mesaba.
27 Car of machinery came.
28 Moved boiler and part of outfit.
29 Clearing off for camp.
30-31 Setting up machine. Digging pit to start
standpipe.
June 1 Finished moving.
2 Set up tripod, made connections, etc.
3 Started standpipe down 8'. 8 8
4 Trouble with standpipe on account of
boulders.
5 Standpipe down 16' on something solid. 8 16
6 No headway today.
7 Put down 2' casing through broken ledge.
Black slate ledge dipping 10º.
4
3
20
23
9 Pulled up 3" casing and blasted the loose
ledge with 1 1/2" no. 2xx Aetna dynamite.
(Electrical battery). Drove the standpipe
to depth of 18 1/2'. Did not strike quite
the same place as before and drilled a
new hole to depth.
10 Reamed 2" casing to depth of 22 1/2'.
Drilled black slates.
6 29
11 Black slates. 19 48
12      "     " 17 65
13      "     "  Getting harder. Dip 13º 14 79
14      "     "  A little softer, as before. Dip 10º. 16 95
16 Drilled black slates. At night, black slates. Grey mica slate. 15
10
1
110
120
121
17 Drilled grey mica slate. At night, grey mica slate. Hard and silicious. Soft grey mica slate. 12

5
1
133

138
139
18 Drilled grey mica slate. The rock today appears to be all broken up. Very little core. At the last, the core barrel was frequently wedged tight, apparently by small pieces caving into the hole, and givso much trouble that I held off the night shift. 11 150