- unitid
-
{"value"=>"172447", "type"=>"local_mss"}
{"value"=>"8.22", "type"=>"local_call"}
- unitdate
-
{"value"=>"1906 Sept 6-1910 Dec 31", "type"=>"inclusive", "normal"=>"1906-09-06/1910-12-31"}
- unittitle
-
{"value"=>"Volume 22 \"N\""}
- scopecontent
-
{"value"=>"<p>Cananea [Max.] mine and Ariz. copper mines (p. 2-112); skeleton record: Jan 1-Sept 6 '06 (p. 179), Oct 18-Dec 31 '06 (p. 107), Jan 1-Dec 31 '07 (p. 179); Red River N.M. copper mines (p. 107, 161-179); Cuban mines, 1909-10 (p. 180-256); Gulf & N.W.R.R., 1910 (p. 262-276); Butte & Boise R.R., 1910 (p. 284-292); Waldo's manganese mine, Washington (p. 297-342); skeleton record, 1908-10 (p. 344).</p>"}
- container
-
{"type"=>"box", "value"=>"8"}
- date_start
-
1906-09-06
- keydate
-
1906-09-06
- date_end
-
1910-12-31
- date_inclusive_start
-
1906
- date_inclusive_end
-
1910