Results 61 to 70 of about 1,915 (220)
Горные науки и технологииThe expansion of mining in potash mines has faced the problem of fresh air shortage, which cannot be solved within the current paradigm of self-contained ventilation.
Konstantin A. Chernyi +1 more
doaj +1 more source
A Newly Discovered Tablet‐Making Facility in Nineveh: Insights From Scientific Analysis
Archaeometry, EarlyView.ABSTRACT This paper addresses the question of tablet technology in the Neo‐Assyrian capital city of Nineveh. Recent excavations in the lower town of Nineveh by the Iraqi–Italian Archaeological Expedition uncovered an exceptional assemblage of more than 200 tablets from an elite residence that appears to have included a scriptorium.
Mathilde Jean +7 more
wiley +1 more source
Success and failure in England's patent system: New evidence from patent applications, 1783–1834
The Economic History Review, EarlyView.Abstract Our understanding of the relationship between the English patent system and technical change during the industrial revolution is based entirely on the study of successful patents. We address this feature by providing the first study of unsuccessful patent applications in England during the first industrial revolution.
Stephen D. Billington, Joe Lane
wiley +1 more source
The Study of Potash Mining Risk Possibilityin Thailand
, 2014 Risk possibility studies of potash mining in Thailand become necessary because potash will soon be widely mined in Northeast Thailand. This paper reviews previous comparative documents to learn the former risk impacts from potash mining in many other ...
Suwanich, Parkorn
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Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2020 A technique has been developed of justification of possibility and expediency of extraction of the reserves left, which were mined more than 40 years ago by chamber system with maintenance in a safe condition of underground mining constructions.
I. I. Golovaty +2 more
doaj +1 more source
Halophytes at potash-mine dumps in Germany and France (Alsace)
, 2000 Kalihalden in Mitteleuropa sind in den letzten Jahrzehnten von zahlreichen Halophyten neu besiedelt worden. Aktuelle Daten zum Vorkommen von 35 ausgewählten Halophyten werden für 84 Kalihalden in Deutschland (Niedersachsen, Sachsen-Anhalt, Thüringen ...
Garve, Verena, Garve, Eckhard
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ComputationThis paper addresses the numerical simulation of unsteady, non-isothermal ventilation in a dead-end mine working of a potash mine excavated using a borer miner. During its operations, airflow can become unsteady due to the variable operating modes of the
Lev Levin +4 more
doaj +1 more source
Записки Горного института, 2019 Statistical data on the reliability of self-propelled mine cars (SPMC), operating in the potassium mines of the Verkhnekamskoye potassium and magnesium salts deposit are analyzed. Identified the main nodes that limit the resource SPMC. It has been proven
D. I. Shishlyannikov +2 more
doaj +1 more source
Natural Resources and Political Patronage in Africa: An Ethnicity Level Analysis
Review of Development Economics, EarlyView.ABSTRACT We investigate the effect of resource discoveries on ethnicity‐level political patronage in Africa using a large geospatial dataset of 254 ethnic groups in 15 countries over the period 1960–2004. We find that the first (or single first) resource discovery in a virgin ethnic homeland increases the share of cabinet posts of that ethnicity.
Sambit Bhattacharyya, Nemera Mamo
wiley +1 more source
RECLAMATION OF POTASH MINE SLIME TAILINGS USING CROSS-LINKED POLYACRYLAMIDE HYDROGEL [PDF]
, 2001 Potash mine slime (PMS) tailings, a silty clay marine sediment by-product of potash mining, can have electrical conductivities> 200 mS em" and sodium adsorption ratios> 60.makingthe tailings extremely saline-sodic in nature and difficult to reclaim. The
Cameron, Kathleen D
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