By A.K.M. Rainbow (Eds.)
Destined to develop into a massive reference paintings, this publication offers a variety of professional papers at the exploitation of coal mining wastes (minestone). updated advancements and learn effects are pronounced from worldwide, supplying a wealth of knowledge for civil and mining engineers, environmentalists, and land reclamation experts
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Extra info for Reclamation, Treatment and Utilization of Coal Mining Wastes: Nottingham, England, September 7-11,1987
Reclamation of Mineral Workings. Where higher quality aggregates reserves such as limestone or sand and gravel are located adjacent to or below spoil heaps it is possible to recover them and restore the land form by filling the void with the colliery spoil. a) Aggregates are recovered b) Dereliction is removed This serves two purposes:- It is also possible for quarry-prior-to-tipping operations to be carried out at working mines when suitable aggregates are located on or near the tipping site. In addition opencast coal operations can provide voids for tipping adjacent to collieries or dispose of existing tips when they overly coal reserves to be extracted by opencast methods.
G. IMPORTANT ASPECTS OF THE EVALUATIVE FRAMEWORK The Framework encourages the identification and evaluation of alternative disposal options for a colliery or group of collieries. It is intended that British Coal should apply the procedure when it is formulating ideas for particular collieries. The Framework should not be used after a decision on a disposal option has been made, nor should it be used solely as a way of justifying a pre-determined scheme. 33 In general, the parties will initially find it useful to select jointly the options to be investigated and to agree the level of detail for the subsequent analyses appropriate to the problem in hand.
The objective of this phase is to identify the difference in costs between options - not to define the absolute costs of tipping for any particular option. The criteria for inclusion of costs should be whether the particular item affects the decision between options or, in the case of one option, 28 whether to go ahead or not. Costs for each option are summarised as follows :- i) Cashflow Summary. The costs of each activity are designated to specific years on an overall Cashflow Summary sheet. The flows of each year are then totalled.