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Blasting

(940 words)

Author(s): Bartels, Christoph
1. Introduction Blasting is using explosives (black powder or gunpowder; other substances only came into use after the early modern period) in mining. Technically, blasting imitates an accident occurring in the military use of black powder, where the squib jams in the barrel of the cannon or gun, which is then often blown apart by the exploding powder charge [4. 55].When rocks and minerals needed to be loosened, holes were bored in the mass. If the borehole was dry, a certain amount of loose powder would be poured into it; if the hole was wet, the powde…
Date: 2019-10-14

Ventilation (mining)

(735 words)

Author(s): Bartels, Christoph | Farrenkopf, Michael
The ventilation of mining operations includes all the physical and chemical reactions and the means employed in the context of mining technology that serve the following purposes: (1) conveying enough breathable air to the miners and animals working underground, (2) safeguarding the air that the mining lamps need for combustion, (3) dilution and removal of the explosive (“pounding”), stifling (“stagnant”), and noxious (“evil”) gases (s0-called mine air), and mitigating excessive heat by supplying cooler air to create a bearable working temperature [5]. Generation of a…
Date: 2023-11-14

Tin

(1,113 words)

Author(s): Bartels, Christoph
1. Basics Along with iron, copper, lead, and the precious metals, tin is one of the most important metals, used since prehistoric times (Smelting, by-products of). Its deposits are associated with granite. Economically recoverable mineral deposits are rare [3. 11–17]: in Europe they are concentrated in Cornwall and Devon, along with the “tin province of the Ore Mountains” in the …
Date: 2022-11-07

Water management

(1,307 words)

Author(s): Bartels, Christoph
1. Drainage tunnelsEspecially in regions with a temperate climate, water management is one of the most important requirements for successful mining. Without provision for water management, it can become impossible to work at a depth of just a few meters. Among the earliest of these provisions are drainage tunnels, which were bored with a slight slope to or into the mineral deposits so that the groundwater could drain out. Throughout the early modern period, such tunnels were incorporated i…
Date: 2023-11-14

Mining lamp

(815 words)

Author(s): Bartels, Christoph | Farrenkopf, Michael
The term  mining lamp denotes any source of artificial light employed to illuminate the underground spaces created in the mining of mineral resources. The German miners’ term  Geleucht became a common collective term for mining lamps [1]. In comparison to other areas of early modern mining technology, many forms of mining lamps were de…
Date: 2020-04-06

Precious metals

(1,805 words)

Author(s): Slotta, Rainer | Bartels, Christoph
1. DefinitionThere is no systematic classification of the metals, but many are grouped together on the basis of specific qualities. Among the precious metals, the most important are gold, silver, and the platinum group (ruthenium, rhodium, palladium, osmium, iridium, rhenium, and platinum). These are the metals that combine with oxygen neither at ordinary nor high temperatures, and do not corrode. Their behavior in combination with acids varies: silver dissolves in nitric acid and concentrated su…
Date: 2021-03-15

Mining literature

(1,078 words)

Author(s): Bartels, Christoph
1. Before industrializationAlong with military technology and artistic craftwork (primarily sacral; cf. Crafts), mining was among the sectors of technology and production that produced specialist literature at an early date. Albertus Magnus made a beginning  in 1250 with his  De mineralibus (“On M…
Date: 2020-04-06

Mineral deposits

(3,223 words)

Author(s): Bartels, Christoph | Kirnbauer, Thomas
1. Definition…
Date: 2020-04-06

Copper

(3,283 words)

Author(s): Häberlein, Mark | Bartels, Christoph | Fried, Torsten
1. Introduction The resurgence of the European population after the plague epidemics of the 14th and 15th centuries, which also brought about a revival of long-distance trade (see Trade, long-distance), led to rising demand for copper, the softness, durability, and malleability of which made it suitable for many different applications (see below, 3.). European expansionism overseas made copper and brass goods important commodities in the Portuguese Africa and Asia trades from the 16th century (World economy) …
Date: 2019-10-14

Extraction

(933 words)

Author(s): Bartels, Christoph
In mining a distinction is made in the context of mining technology between extraction as the separation of minerals from the rock, site preparation with shafts, galleries, and drifts, preparation for extraction, water management and ventilation as auxiliary technologies, and delivery.…
Date: 2019-10-14

Seiger smelter

(903 words)

Author(s): Bartels, Christoph
Seiger smelters (from German seigern, “separate,” “trickle”) were smelters going back to the 15th century that used a new process – and soon on a large scale – to separate silver from copper (Smelting techniques). Many copper mineral deposits have a certain silver content, such as the deposits in Slovakia, the copper shale of the region around Eisleben and in Poland, and the fahlores of Schwaz-Brixlegg in Tyrol. The earliest Seiger smelter is documented for Nuremberg around 1460; earlier references (Nuremberg and Venice around 1420) are disputed [3. 181]. After 1460, Seiger smelters spread throughout Central, Eastern, and Northern Europe [5. 161–164]. In the 16th century, European engineers brought the Seiger process to Central and South America as well as to Japan (Technology transfer).Copper smelting involved three major steps: (1) first, a sulfurous copper matte was produced by melting the smelted copper ore; (2) the matte was then smelted to produce an enriched black copper, now sulfur-free, (3)…
Date: 2021-08-02

Smelting, by-products of

(689 words)

Author(s): Bartels, Christoph
Besides the production of metals like iron, lead, copper, tin, and precious metals, as well as the important copper alloys bronze and brass, operations called smelters – associated with mining and metal smelting (Metal) – produced byproducts of various kinds and engaged in various specialized activities, for example, the production of arsenic. In the industrial age, these forms of production tended to be associated with the chemical industry instead.Sulfur, for example, was produced from the ores of the Rammelsberg near Goslar on the edge of the Harz begin…
Date: 2022-08-17

Mineral dressing

(1,114 words)

Author(s): Bartels, Christoph
1. GeneralAfter extraction the raw products of mining generally need processing to remove the gangue, to sort, purify, and concentrate the valuable material, and to achieve optimum particle size for further utilization. Ore deposits – the most important object of mineral dressing during the early modern period (see Mining 4.1.) – often contain multiple valuable materials. Here the goal was to remove the barren material and separate the various ores (e.g. copper, lead, and zinc ore, and possibly precious metals) as cleanly as possible [9]; [10], since the purer the ore bein…
Date: 2020-04-06

Markscheidewesen

(998 words)

Author(s): Bartels, Christoph | Steffens, Gero
1. GeneralIn the Middle Ages, the term  Markscheidewesen – from Mark (obsolete: “territory, terrain”), Scheide (“boundary”), and Wesen (“entity”) – referred originally only to surveying in the context of mining. At the beginning of the early modern period it came to denote all the surveys and documentation required in mining; the Markscheider is the engineer responsible for all surveys, computations, and representations (plans, graphics) [5]. Measurements in conjunction with structures above and below ground were always a demanding job; carrying them out required specialized geometrical knowledge and special technical equipment. Even in the Middle Ages, therefore, Marksc…
Date: 2019-10-14

Mining

(6,741 words)

Author(s): Bartels, Christoph
1. Definition 1.1. TerminologyThe Middle English “minen” (verb) and “mine” (noun) appeared around 1300, deriving from the Old French miner, “to dig,” and referring to the extraction of mineral resources from mineral deposits. These deposits were collectively called fossils (from Latin  (ef)fodere, “dig [out]”) before that term was narrowed in the 19th century to the preserved remains of living creatures of past ages that were often found during the extraction and dressing of mineral resources.German terminology was founded not on the act of digging, but on the rock dug, borrowing not from French, but from the Latin  mons, which carried two senses in the Middle Ages: “mountain” or “pile” (German  Berg), and “bo…
Date: 2020-04-06

Smelting process

(831 words)

Author(s): Bartels, Christoph
In the early modern period, extraction of metals almost always involved smelting; in Europe, other processes such as amalgamation [2] were employed only for extracting gold. In the first centuries of the period, the latter achieved substantial importance in the extraction of precious metals in Central and South America because of the scarcity of wood and charcoal there. Wet chemical processes were used in assaying, but they found no place in the production of metallic raw materials [1]; [4] apart from the quantitatively insignificant cementation of copper, pr…
Date: 2022-08-17

Mining technology

(3,255 words)

Author(s): Bartels, Christoph | Farrenkopf, Michael
1. DefinitionThe term mining technology embraces all the technological methods and tools employed in extracting underground mineral resources. In the 16th century, this technology was already being systematized in a scientific framework, as is especially clear in the work of G. Agricola (1494–1555) [1], which outlined the essential areas of mining technology: sinking shafts and boring drifts, shoring, extraction, haulage, water management, ventilation, illumination, and m…
Date: 2020-04-06

Assaying

(727 words)

Author(s): Bartels, Christoph
Assaying (or docimasy, from Greek  dokimasía, “examination”) is “the use of empirically developed analytic knowledge in the field of metallurgy, casting, and coinage, but also in alchemical and early chemical laboratories, since quantitative testing procedures were needed for the production and testing of salts, mineral acids, alcohols, etc.” (Alchemy) [8. 173]. In use since the Middle Ages, it developed into an independent discipline with its own literature in the 16th century; the first small book on assaying with formulas and instructio…
Date: 2019-10-14

Smelting techniques

(979 words)

Author(s): Bartels, Christoph
To be able to turn ores into metals, chains of chemical and physical processes have to be initiated and mastered so that they can be reproduced with assurance. Until well into the 18th century, however, the necessary chemical and physical knowledge was only partially a…
Date: 2022-08-17

Wasserhaltung

(1,221 words)

Author(s): Bartels, Christoph
1. Entwässerungsstollen Die W. zählt insbes. in Regionen mit gemäßigtem Klima zu den wichtigsten Voraussetzungen eines erfolgreichen Bergbaus (Montanwesen). Ohne Einrichtungen der W. kann schon in einer Tiefe von nur wenigen Metern nicht mehr gearbeitet werden. Zu ihren ältesten Einrichtungen gehören Entwässerungsstollen, die mit leichtem Anstieg zur bzw. in die Lagerstätte vorgetrieben wurden und über die das Grundwasser abfließen konnte. Solche Stollen waren während der gesamten Nz. Bestandteil von Bergwerken b…
Date: 2019-11-19
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