Controlled blasting in a limestone mine using electronic detonators…

Except for very deep seated deposits open cast mining method has been recognized as the safest and most productive mode for mining minerals Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine which has resulted in an increasing trend towards large capacity open cast projects Explosives and

PDF Assessment of Environmental Impacts of

1 Introduction Mining provides important raw materials for national economic development and the progress of human civilization and is a mainstay industry of many countries and regions [] Moreover open pit mining is generally preferred in mining operations due to its applicability in all operable areas of exposed rock minimum production loss and high

Frontiers Rock fragmentation size distribution control in

The mining operation is designed to produce ore with a block size not exceeding 1 000 mm The mining site represents an isolated ore body with significant relative elevation differences typically featuring slope angles ranging from 15° to 34° The predominant rock type in the mining area is limestone with minor interbedded shale

Modified Design of Pillar Based on Estimated Stresses and

The design and strength of pillars are important parameters while implementing the room and pillar mining method in a limestone mine The process becomes complex with the presence of the karst voids which are frequent phenomena in a carbonate rock formation The karst system is a network of cavities that along with an omnipresent fracture network may lead

Limestone Mining in India SpringerLink

This book brings together a comprehensive and up to date presentation of the main scientific and technological aspects of limestone mining The book discusses how to excavate limestone from surface mines including the nuances of production and commercial addresses topical issues related with the quarrying of limestone and environmental protection measures adopted

Environmental impact assessment of limestone quarry using

Environmental Impact Assessment EIA is a prominent technology to assess the environmental changes in the open cast Limestone mining region However traditional EIA methods and Limestone deposit identification involves time consuming cost effective and manpower requirements We cope up these problem and incorporated with different satellite

Excavation of Limestone SpringerLink

Limestone is found near the surface called a surficial deposit ; hence it is produced mainly from surface and large limestone is mined by two methods opencast stripping for hilly deposits and open pit mining for plain deposits To meet the industrial requirements of a large country like India medium and small sized mines of various types and

Estimating Strength of Pillars with Karst Voids in a Room

Currently there are 110 underground stone mines in the USA majority of which employ room and pillar mining methods to extract limestone for crushed stone products NIOSH 2021 Despite employing fewer miners than coal mines stone mines experience a higher number of reportable injuries Since 1983 about 12% of all the reported injuries in

Evaluation of the Impacts of Limestone Mining on Soil

The most widely adopted method of limestone mining is through opencast with bench formation Ganapathi and Phukan 2020 Olotu et al 2022 investigated the effect of limestone extraction in Okpella and its environs Environmental degradation due to limestone exploitation has seriously affected crop yield in Okpella as a result of

Critical Evaluation of Industrial Mineral Mining Methods

traditional mining methods in Sri Lanka Mining Method in Bogala Graphite Mine In Bogala Mine the overhand cut and fill mining method is practised with the deepest operation level of 503 m Prior to the mining m 60 m 60 m W L H block is defined including two main levels and two winzes Then m m W H area

A GIS based method of risk assessment on no 11 coal floor

The no 11 coal seam in the deep area of Hancheng mining area is mining in recent years which is threatened by the water inrush from the Ordovician limestone aquifer Coal floor water inrush is governed by the water abundance of coal floor aquifer the water resisting performance of coal floor aquitard and the pathway connecting the water source and the

PDF Controlled blasting in a limestone mine

Sri Lanka is endowed with a rich base of industrial minerals despite its small land area Traditional and modernized mining methods are employed to mine graphite limestone beach mineral sand

Rock fragmentation size distribution control in blasting a

Deep hole bench blasting is the primary method for aggregate extraction in mines However factors such as complex geological conditions and suboptimal blasting parameters often result in uneven rock fragmentation and high fines content This not only increases the cost and energy consumption of subsequent aggregate processing but also has

PDF Impacts of limestone mining and processing on water

PDF On Jan 1 2016 Okunlola I A and others published Impacts of limestone mining and processing on water quality in Ashaka Area Northeastern Nigeria Find read and cite all the research

Limestone Types Properties Composition Formation Uses

Limestone is a sedimentary rock primarily composed of calcium carbonate CaCO3 in the form of mineral calcite or is one of the most common and widely distributed rocks on Earth with a wide range of uses in various industries and natural settings Limestone forms through the accumulation and compaction of marine organisms primarily the

PDF Characterization of Selected Mineral Ores in the

Characterization of mining waste was performed for limestone gold and iron mine waste which includes physical mineralogical chemical and morphological analyses that determine its potential for

NEW METHODS OF INCREASING THE ACTIVITY OF

Limestone or lime is added to the charge to avoid formation of a large amount of fayalite Reacting with silica and aluminum oxide the calcium oxide of the limestone forms ternary and other types of alloys that have lower melting points than fayalite and are more easily reduced The addition of limestone or lime also speeds up the sintering

Ecofriendly Hill Mining by Tunneling Method IntechOpen

Mostly hills are mined by Strip mining removing the hills from top This conventional approach destroys the landscape and defaces the beauty of the hill Besides a large amount of dust generated at source disturbs the villagers and nearby human settlements during the excavation operation or related activities To eliminate this and remove the out yard

Massive Pillar Collapses in US Underground Limestone

From 2015 to 2021 five massive pillar collapses occurred at four underground stone mines in the eastern USA These events resulted in powerful airblasts that damaged mine infrastructure and mobile equipment seriously injured miners and disrupted underground travelways Each of these pillar collapses propagated through the overlying strata causing a

Exploration of subsurface strata conditions for a

Maharashtra Æ Limestone mining Æ Ground penetrating radar Æ Void Æ Amal Nala Æ Solution cavity Introduction Limestone is an essential raw material for production of cement Its excavation in India is performed by surface mining methods only A Manikgarh limestone mine is sit uated 12 km from the village Gadchandur in the tehsil Ra

Co products from the limestone mining as sources of

The use of alternative sources of nutrients such as mining co products is an ancient practice that has been increasingly applied in recent years to reduce production costs and increase the residual effect of soil fertilisation Toscani and Campos 2017 Silicate rocks and mining co products contribute to medium and long term increases in soil fertility according to

PDF Application of cuckoo search method in

An attempt has been made to design the effective factors on Tajareh limestone mine explosion in order to reduce improper fragmentation and flyrock and it was found that GSI and burden receive the highest influence values on both flyrock and rock fragmentation A successful and favorable explosion not only causes a proper rock fragmentation but also

3 Requirements to ascertain best practices in limestone mining

Silt and other effluents produced by limestone quarries can change the water quality in surface and groundwater reserves Water quality monitoring in India s limestone mining areas showed elevated