... The instrument of culture over all this region is a hoe, the iron of which the Batoka and Banyeti obtain from the ore by smelting... 
David Livingstone 「Missionary Travels and Researches in South Africa」
... The iron ore exists in great abundance, but I did not find any limestone in its immediate vicinity...
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」
...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」
...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」
...These furnaces seem to have taken about 600 dozenbushels of ore at one time, during the delivery of which no second partywas allowed to come in...
H. G. Nicholls 「The Forest of Dean」
...,or ore (intended for Ireland) shipped on the Severn 6s...
H. G. Nicholls 「The Forest of Dean」
...The ore was carried down to thefurnaces on mules’ backs, from Edge Hill and other mines...
H. G. Nicholls 「The Forest of Dean」
...This limestone iscalled the ‘crease,’ and is frequently found enveloped andcovered with the iron ore...
H. G. Nicholls 「The Forest of Dean」
...They likewise suppose, butprobably without foundation, that the ore will be found to deteriorate inproportion as the workings descend...
H. G. Nicholls 「The Forest of Dean」
...The Persian lazur appears to have been a similar pigment, being a sortof copper ore, which, when the stone was pounded and sifted, furnished afine paint, very bright and pleasant...
George Field 「Field's Chromatography」
...This substanceis the sulphide of lead, found native in the beautiful lead ore, orGalena, of Derbyshire...
George Field 「Field's Chromatography」
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