436 MINERALS YEARBOOK, 1967 
Table 9.—Iron ore 1 shipped from mines 
(Thousand long tons) 
 
 
 
 
 
 
Proportion 
 
 
 
 
 
 
of concen 
Year 
Direct 
shipping 
ore 2 
 
Concentrates 
 
Total 
usable 
ore 3 
trates to 
total 
usable 
ore 
(percent) 
 
 
Agglomerates 
Other 
Total 
 
 
1968                            
7,468 
16,857 
21,110 
37,967 
45,435 
83.56 
1964                            
1965                            
1966                            
1967                            
10,441 
11,579 
12,863 
11,149 
19,267 
19,039 
21,580 
23,884 
19,917 
20,255 
20,690 
14,424 
39,184 
39,294 
42,270 
38,308 
49,626 
50,873 
55,133 
49,457 
78.96 
77.24 
76.67 
77.46 
1 Exclusive of ore containing 5 percent or more manganese. 
2 Includes crushed, screened, and sized ore not further treated. 
Data may not add to totals shown because of independent rounding. 
 
Table 10.—Dates of first and final cargoes of iron ore at U.S. upper
Great Lakes ports 
Port and dock 
1966 
 
— First Final 
 
 
1967 
 
 
Final 
 
 
 
First 
 
Duluth, Minn.: DM&IR                          
Escanaba, Mich.: C&NW                          
Mar. 30 
Mar. 31 
Nov. 27 Dec. 23 
Apr. 12 Apr. 7 
Dec. 11 Dec. 22 
Marquette, Mich.: 
Sm Line                                  LS&I                       
             
SilverBay, Minn.: Reserve                       Superior, Wis.: 
GN                                       
 NP-Soo Line                               Taconite Harbor, Minn.: Erie 
                    
Apr. 26 
Apr. 4 
Apr. 8 
 
Apr. 11 
Apr. 22 
Apr. 8 
Nov. 20 
Dec. 13 
Dec. 13 
 
Dec. 1 
Oct. 24 
Dec. 10 
May 9 
Apr. 15 
Apr. 15 
 
Apr. 14 
May 2 
Apr. 12 
Nov. 14 
Dec. 16 
Dec. 10 
 
Dec. 17 
Oct. 25 
Dec. 8 
Two Harbors, Minn.: DM&IR                      
May 20 
Nov.20 
May 15 
Dec. 28 
Source: Skillings' Mining Review. 
 
Table 11.—Shipments of usable I manganiferous iron ore and ferruginous
manganese ore from mines in the Cuyuna Range 
Year 
 Manganiferous iron ore (5 to 10 percent Mn, natural) 
—————————_______ 
Shipments Contents (natural) S 
 (long —— 
Ferruginous manganese ore 
(10 to 35 percent Mn, natural) 
Total 
shipments (long 
tons) 
 
 
hipments Contents (natural) 
 (long — 
 
 
tons) Fe Mn (percent) (percent) 
tons) Fe Mn (percent) (percent) 
 
1963 
 
 310,121 33.39 12.18 
310.121 
1964                     
 27,725 36.59 9.68 
 140,562 32.61 12.38 
168,287 
1965                     
1966                     
1967 
 32,935 33.99 7.27 4,035 33.55 8.61 
                          
 217,695 35.47 12.75 242,020 33.87 14.12 211,387 32.88 14.56 
250,630 
246,055 
211,387 
1 Direct-shipping and benefIciated ore. 
 
 Manganiferous Ore.—Shipments of manganiferous ore (ore containing
5 to 35 percent manganese, natural) were 211,387 long tons, a decrease of
14 percent from those of 1966. All shipments were concentrates of ferruginous
manganese ore (ore containing 10 to 35 percent manganese, natural) from stocks.
Average natural iron and manganese contents of shipments were 
 
32.9 and 14.6 percent, respectively. Manganiferous ore was shipped from seven
Cuyuna Range properties in Crow Wing County by The Hanna Mining Co. and Pittburgh
Pacific Co. The latter company was converting the underground portion of
its Louise mine near Crosby to an openpit mine, with plans to begin mining
in 
1968.