... ore than a week went by, in which the ill-luck that had hitherto pursued the Covenant upon this voyage grew yet more strongly marked... 
Robert Louis Stevenson 「Kidnapped」
...Masiko lived at a convenient distance from the Saloisho hills, where there is abundance of iron ore, with which the inhabitants manufacture hoes, knives, etc...
David Livingstone 「Missionary Travels and Researches in South Africa」
...The Bakuss smelt copper from the ore and sell it very cheaply to thetraders for beads...
David Livingstone 「The Last Journals of David Livingstone, in Central Africa, from 1865 to His Death, Volume II (of 2), 1869-1873」
...With his simple bellows and a charcoalfire he reduced the ore that is found in many parts of the continentand forged implements of great usefulness and beauty...
W.E.B. Du Bois 「The Negro」
...The Negro can work in wood and iron; and no one objects so long as heconfines his work to the felling of trees and sawing of boards, to thedigging of iron ore and making of pig iron...
Booker T. Washington 「The Future of the American Negro」
...There was but one known abolitionist living in that city,named George Ore...
Henry Bibb 「Narrative of the Life and Adventures of Henry Bibb, an American Slave, Written by Himself」
...When we carried a large pail full of it out of the woods, it seemed still more like ore...
John Burroughs 「Birds and Bees, Sharp Eyes and, Other Papers」
...In many places it is found on top of the ground and in someparts it can be melted by simply placing a piece of ore in the fire verymuch as you would a potato to be roasted...
Various 「The Journal of Negro History, Vol. I. Jan. 1916」
...This same Court decided that “the Winchester bushell, three ofwhich were to make a barrell,” should be the constant measure for“iron ore and coale,” 4d...
H. G. Nicholls 「The Forest of Dean」
...Its chief interest consists in the circumstance that it has been employedfrom very early times as a material for building; for though it contains avein of iron ore, little has been done in mining it...
H. G. Nicholls 「The Forest of Dean」
...The manufactories which were once at the mines of the Ephesians have nowbeen transferred to Rome, because this kind of ore was later discoveredin Spain...
Vitruvius 「Ten Books on Architecture」
...The predominance ofmagnetic iron ore, to which they owe their vivid colour, has thusseriously affected the molecular arrangement of the rocks...
Hugh Macmillan 「Roman Mosaics」
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