Relation of Coal-Dust to Explosions in Coal-Mines [PDF]
Nature, 1886 IT is a stubborn and grievous fact that the loss of life by explosions in coal-mines has risen in the last decade, although the number of explosions has fallen. This points clearly to some essential defect in the remedies adopted. The remedies in use apply apparently to one class of explosions only, hence the decrease in the number of explosions.
openaire +2 more sources
ELECTRIC MINING-MACHINERY, WITH SPECIAL REFERENCE TO THE APPLICATION OF ELECTRICITY TO COAL-CUTTING, PUMPING, AND ROCK-DRILLING. (INCLUDES PLATES AND APPENDIX). [PDF]
, 1891 L.B. Atkinson, C W ATKINSON
openalex +1 more source
Deep Underground Science and Engineering, EarlyView.In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian +6 more
wiley +1 more source
Fire and Materials, Volume 47, Issue 1, Page 28-50, January/February 2023., 2023 Summary The interactions of Calcium carbonate (e.g., eggshell powder) and Lignin with ammonium polyphosphate (APP) when used as fire retardants were investigated. Three mixing ratios ‐ 1:3, 1:1, and 3:1, were used with natural fibre reinforced composites containing a hemp mat and an epoxy matrix manufactured using a light resin transfer moulding (L‐RTM)
Asanka P. Basnayake +4 more
wiley +1 more source
Lateral abutment pressure distribution and evolution in wide pillars under the first mining effect
International Journal of Mining Science and Technology, 2023 The wide pillars are generally popular due to the high productivity and efficiency in Northwest China. The distribution of lateral abutment pressure in coal pillars is important for mining safety.
Zhen Zhang +6 more
doaj
I.—Chart of Fossil Shells Found in Connection with the Seams of Coal and Ironstone of North Staffordshire. By Hind WheeltonM.D., F.R.C.S., F.G.S., and Stobbs JohnF.G.S., (Published by the North Staffordshire Institute of Mining and Mechanical Engineers, 1903. Price 5s.) [PDF]
, 1903 Walcot Gibson
openalex +1 more source
Deep Underground Science and Engineering, EarlyView.This study, which focuses on geological hazards associated with coal mines, analyzes the types and sensing parameters of geological hazards caused by coal seam mining, summarizes the action fields related to these hazards in mining, and discusses the multi‐field sensing method of disaster characteristics associated with mining rock mass in conjunction ...
Chunde Piao +4 more
wiley +1 more source
The influence of oil price uncertainty on stock liquidity
Journal of Futures Markets, Volume 43, Issue 2, Page 141-167, February 2023., 2023 Abstract Using high‐frequency intraday data, this study provides strong empirical evidence that elevated oil price uncertainty has a significant and negative influence on stock liquidity. More specifically, the results suggest that large oil‐related corporations are most affected, followed by small‐listed firms more generally.
Qin Zhang, Jin Boon Wong
wiley +1 more source
Coal Mine Safety Alert System: Refining BP Neural Network with Genetic Algorithm Optimization [PDF]
arXivIn response to the persistent safety challenges within coal mines, this study proposes a novel approach integrating a three-layer feedforward backpropagation artificial neural network with a genetic algorithm (GA-BP) for establishing a safety early warning system.
arxiv
MODERN IMPROVEMENTS IN COAL-MINING: WINDING FROM DEEP MINES. SECOND METROPOLITAN ENGINEERING CONFERENCE, 8 JUNE 1899. NOTES INTRODUCING SUBJECTS FOR DISCUSSION. SECTION IV - MINING & METALLURGY. [PDF]
, 1899 H Martin
openalex +1 more source