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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The economic effects of urbanization on the crushed stone industry in the rural municipality of Rockwood, Manitoba

Jones, Charles William January 1982 (has links)
Economically, a quarry operation has a greater competitive advantage over its rival firms the closer it locates to the urban market. However, an active quarry operation typically generates environmental disamenities and when placed in an urban-suburban setting, it causes serious land use conflicts. The residents' desire for a clean environment and peaceful surroundings comes into conflict with quarry activity. Over time, the residents demand the local municipal government to control active quarry operations, who in turn may establish zoning ordinances. This action restricts the productive capacity of the industry, which causes an increase in production costs. As the conflict escalates, the quarry operator, for economic reasons, is encouraged to locate further from the urban-suburban setting. This practicum has analyzed this type of land use conflict between the local residents of Rockwood Municipality, Manitoba and the quarry industry, and has estimated the relocation costs at selected deposits near Winnipeg. In June, 1979, Clean Environment Commission public hearings, under the authority of the Clean Environment Act, were held to prescribe limits on discharge of contaminants into the environment from crushed stone quarries located in Rockwood Municipality. As a result of these hearings, emission standards on all phases of production were established on all active quarries in Rockwood Municipality. As land use competition increases and land use conflicts escalate between active quarry operations and residents, there will be an increased pressure for the crushed stone industry to relocate outside the urban setting causing an increased delivered price. If mining is unduly restricted before depletion of the mineral resource due to local environmental concerns, there will be a cost to society. The focus of the research was to estimate the increased delivered price that would occur if the crushed stone industry were forced to relocate at the next closest deposit outside the urban fringe.
2

Plant ecology of British slate quarry habitats

Hawkings, J. A. January 1984 (has links)
No description available.
3

The geology of Kelleys Island

Fisher, Mildred January 1922 (has links)
No description available.
4

The optimisation of aggregate and asphalt production using modern management techniques : the use of modern management techniques and information technology to improve aggregate and asphalt production

McManus, Donal January 1998 (has links)
No description available.
5

Techniques for triggering germination of Adenostoma fasciculatum in revegetation projects at Rocky Canyon Granite Quarry a thesis /

Scolari, Stephanie Brook. Holland, V.L. January 1900 (has links)
Thesis (M.S.)--California Polytechnic State University, 2009. / Title from PDF title page; viewed on January 6, 2010. Major professor: V.L. Holland, Ph.D. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree [of] Master of Science in Biological Sciences." " 2009." Includes bibliographical references (p. 79-88).
6

Habitat use, community structure and biogeography of spiders (Araneae) in semi-natural and disturbed limestone grassland

Bell, James Robert January 1999 (has links)
No description available.
7

Design Optimization of Safety Benches for Surface Quarries through Rockfall Testing and Evaluation

Storey, Andrew Wilson 17 September 2010 (has links)
The research presented in this thesis results from efforts to evaluate current design methodologies for safety benches in surface aggregate quarries. Proper bench design is important for preventing rockfall related accidents and injuries without wasting the reserves held in the benches. An in depth analysis has been performed using the results from 230 rockfall tests conducted at two surface quarries. The goal of this project is to give practitioners the tools they need for improved bench design. Principal Components and Cluster Analysis, techniques not previously applied to rockfall investigations, have been performed on the test data. The results indicate that both are valid analytical methods which show that the factors affecting the rollout distance of a rock are wall configuration, rock dimensions, and rock energy. The test results were then compared to the Ritchie Criteria, Modified Ritchie Criterion, Ryan and Pryor Criterion, Oregon Department of Transportation design charts, and RocFall computer simulations. Analysis shows that the lognormal distribution curves fitted to the test data provide an excellent yet quick design reference. The recommended design method is computer simulation using RocFall because of the ease of simulation and the site specific nature of the program. For the two quarries studied, RocFall analysis showed that 20 ft benches with a 4 ft berm will hold over 95% of rockfalls, a design supported by the field testing. Conducting site-specific rockfall testing is also recommended to obtain realistic input parameters for the simulations and to provide design justification to regulatory agencies. / Master of Science
8

Alvar in the post industrial: (re) introducing alvar plant communities in the inwood quarry

Johnson, Kaila 05 September 2014 (has links)
This practicum investigates the reintroduction of a globally recognized at-risk plant community, Alvar, into an abandoned limestone quarry, located in the town of Inwood, in the Interlake Region of Manitoba. Alvar develops naturally over the course of thousands of years, and also naturally exists on exposed limestone bedrock, which is subsequently one of the greatest indicators of suitable areas for limestone quarrying. By utilizing recent techniques proven to be effective in Alvar regeneration, this practicum focuses on the landscape architect as a pivotal tool in creating a functional landscape, both in terms of environmental, social, and economic integrity. Using an ecotourism-based approach to engage the public with the site, while creating a platform for Alvar regeneration and future scientific research initiatives provides an economic, ecological, and social solution to some of the most negatively viewed aspects of the area. This practicum offers an alternative solution to traditional quarry rehabilitation strategies as well as the at-risk Alvar plant communities: strengthening it by reintroducing it in a post-industrial landscape, while raising awareness about its historic and ecological significance in an ecotourism-based outlet.
9

Permian to Cretaceous evolution of the Piedmont along the Alabama - Georgia coastal plain unconformity

Layfield, Nathan Timothy, Hames, W. January 2009 (has links)
Thesis--Auburn University, 2009. / Abstract. Vita. Includes bibliographical references (p. 101-110).
10

Impacto ambiental en el geosistema de las canteras de sillar de Añashuayco – Arequipa / Impacto ambiental en el geosistema de las canteras de sillar de Añashuayco – Arequipa

Trujillo Vera, Carlos César 10 April 2018 (has links)
The quarries of Añashuayco are located northwest of the city of Arequipa on a peneplain formedby ignimbrites and alluvionic deposits.The geomorphology of the area is made by a traversal quebrada coming down from the Chachani volcano until its contact with the Chili river in the Uchumayo district, very closeto the La Caldera batholit. The upper sector of quebrada Añashuayco is settled by very poor people without any urbaninfrastructure. The medium sector is affected by the wastes of the industrial park Río Seco which have already infiltrated the underground water. The air quality is also very poor due to the burning of domestic garbage which produces a very uncomfortable smell. The lower sector of the quebrada is formed by ignimbrites and it is the quarries sites that have provided building material to Arequipa since Colonial times.In spite of being considered as a touristic attraction, these quarries are in complete abandonement and much polluted. Then, there is a need to join cooperation efforts from geography and education in order to get a more sustainable environment to benefit the locals and the landscape in general. / Las canteras de sillar de Añashuayco se localizan en la parte noroeste de la ciudad de Arequipay ocupan parte de la penillanura constituida por ignimbritas y depósitos aluviónicos. La geomorfología del área presenta una quebrada transversal que se inicia en el aparato vol- cánico del Chachani y concluye en la margen derecha del río Chili en el distrito de Uchumayo muy cerca del batolito de La Caldera.La parte superior de la quebrada está ocupada por asentamientos humanos en situación de extrema pobreza, mostrando una ocupación anárquica del territorio. La parte media recibe el impacto del Parque Industrial de Río Seco, donde los efluentes de las curtiembres y relaves de Inka Bor son depositados en esta quebrada, afectando directamente a la napa freática al producir un proceso de infiltración. Asimismo, se observa la presencia abundante de residuos sólidos y la atmósfera en esta zona es afectada principalmente por la constante quema de basura doméstica, lo que ocasiona olores fétidos. En el sector inferior de la quebrada, constituida por ignimbritas, se observa la extracción de este material obteniendo el sillar que ha sido utilizado desde la época colonial en la arquitectura religiosa y civil de la ciudad de Arequipa.A pesar de haber sido consideradas como un atractivo turístico, las canteras de sillar de Añashuayco se encuentran actualmente en un estado de contaminación total, por ello se debe hacer un esfuerzo desde la perspectiva geográfica y educativa a fin de contribuir al desarrollo de una sociedad más sustentable y equitativa para las actuales y futuras generaciones, tanto enel ámbito local como global.

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