..., Portland, Ore... 
Various 「Astounding Stories, August, 1931」
...In some places it is obtained from what is called the specular iron ore, and also from black oxide...
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」
...Wepassed mines of fine black iron ore ("motapo"); it is magnetic...
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」
...Why, wenamed you Hematite because theystruck the big find of ore in the minethat same morning...
Various 「Ainslee's magazine, Volume 16, No. 3, October, 1905」
...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」
...Mushet’sremarks on the remains of the above works—First attempts to useprepared coal in the furnaces—Iron-works suppressed—Value ofiron ore at that time—Dr...
H. G. Nicholls 「The Forest of Dean」
...,or ore (intended for Ireland) shipped on the Severn 6s...
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」
...” These variousores were found by the same excellent authority to yield iron in thefollowing proportions:—...
H. G. Nicholls 「The Forest of Dean」
...First, beforegetting to the vermilion itself by methods of treatment, they dig outwhat is called the clod, an ore like iron, but rather of a reddishcolour and covered with a red dust...
Vitruvius 「Ten Books on Architecture」
...The same changeshave been produced on the limestones of Greece and Asia Minor by veinscontaining iron ore running through them...
Hugh Macmillan 「Roman Mosaics」
便利！手書き漢字入力検索