نتایج جستجو برای: limestone quarries

تعداد نتایج: 6283  

2000
Gregory C. Ohlmacher

Landslides along the Missouri and Kansas rivers will affect existing structures and potential development in the Kansas City metropolitan area. A pilot landslide-mapping project was conducted in the vicinity of Atchison, Kansas, to inventory existing landslides and determine the factors that caused them. Landslides are generally controlled by the slope morphology, geology, soils, and moisture c...

Journal: :Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 2013

Journal: :Studies in Ancient Art and Civilization 2022

Although structures within the ancient settlement in Marina el-Alamein were built almost exclusively of local limestone, no remains quarries have been found. The author calculates cubature stone used construction houses, based on knowledge applied building solutions. resulting data make it possible to address question city managing works without its own quarry, sourcing limestone from subterran...

Journal: :British journal of industrial medicine 1956
S BRIDGE DAVIS G NAGELSCHMIDT

It is generally believed that exposure to limestone dust does not present a pneumoconiosis hazard. However, Doig (1955) has recently described cases of silicosis amongst limestone workers after prolonged exposure to high dust concentrations. The limestones concerned contained from 5 to 15% quartz as impurity, and dissolution of the calcium carbonate in the lung would leave a quartz-rich residue...

Journal: :Journal American Society of Mining and Reclamation 2007

2014
Hakan Elci Necdet Turk

Block volumes are generally estimated by analyzing the discontinuity spacing measurements obtained either from the scan lines placed over the rock exposures or the borehole cores. Discontinuity spacing measurements made at the Mesozoic limestone quarries in Karaburun Peninsula were used to estimate the average block volumes that could be produced from them using the suggested methods in the lit...

Journal: :Acta IMEKO 2021

<p class="Abstract">To assess the provenance of limestones used in construction and restoration Batalha Monastery central Portugal, stone samples collected from monument five limestone quarries region surrounding building were investigated by energy-dispersive X-ray fluorescence spectroscopy (ED-XRF), powder diffractometry (PXRD) thermogravimetric analysis (TGA). Ca-Sr binary diagrams ED-...

2009
P. Jiménez O. Ortiz D. Tarrasón M. Ginovart M. Bonmatí

This work has evaluated the effects of a thermally dried or composted dewatered sewage sludge on glucosidase activity, total (TCH) and extractable (ECH) carbohydrate content, microbial biomass carbon (MBC) and basal respiration (BR) of soils from limestone quarries under laboratory conditions. Two doses (low, L and high, H) of the dewatered sludge (DS), or of the respective thermally dried (TD...

2003
ANTONIO NIETO KADRI DAGDELEN

A vehicle proximity warning collision avoidance system is being developed using GPS and wireless local area networks to improve safety of off-highway trucks in open pit mines. After two an a half years of research, software development, and laboratory testing, field tests were carried out at operating limestone quarries and open pit mining operations to evaluate GPS accuracy and overall system ...

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