Cierre De Faenas Mineras

Páginas: 67 (16526 palabras) Publicado: 23 de septiembre de 2012
Infomine E-Book

Mine Closure

INFOMINE E-BOOK

Mine Closure

BY

Dr. A. Robertson
&
S. Shaw

1

Infomine E-Book

Mine Closure

Table of Contents
MINE CLOSURE - INTRODUCTION ...................................................................................................... 3
MINE CLOSURE - STEPS IN CLOSURE PLAN DEVELOPMENT.................................................... 5
MINE CLOSURE - CYCLIC EVALUATION OF PLANS AT VARIOUS STAGES OF A MINE'S
LIFE............................................................................................................................................................... 7
FAILURE MODES & EFFECTS ANALYSIS (FMEA) ......................................................................... 10
MULTIPLE ACCOUNTS ANALYSIS (MAA)....................................................................................... 21
MINE CLOSURE - CLOSURE CRITERIA AND INDICATORS........................................................ 28
REHABILITATION OBJECTIVES AND MEASURE .......................................................................... 32
AUDITS AND REVIEWS......................................................................................................................... 33
CUSTODIAL TRANSFER ........................................................................................................................ 40
RECLAMATION/CLOSURE BONDING PRACTICES AND GUIDELINES................................... 48
MINE CLOSURE EXAMPLES................................................................................................................ 50
CALIFORNIA ............................................................................................................................................. 50
IRON MOUNTAIN, CALIFORNIA ................................................................................................................. 51
MINE CLOSURE MISSOURI........................................................................................................................ 53
SOUTH AFRICA ET AL. .............................................................................................................................. 53
MINE CLOSURE - RECOMMENDED READING & USEFUL LINKS............................................. 55

2

Infomine E-Book

Mine Closure

MINE CLOSURE -INTRODUCTION
As we progress into the twenty-first century, there is increasing awareness of the need to
provide for 'sustainability' of ecological and social settings in which mines are developed,
operated and closed. The 'six tenets for sustainability of mining' provide the foundation
for sustainability planning at a mine site. This gives rise to the need to do more than
'Design for Closure',requiring that we also prepare 'Post Mining Sustainable Use
Plans' for the mine site and affected area. This concept is described by Robertson et al.,
1998 and Robertson and Shaw, 1999. It also requires that all stakeholders, including the
succeeding custodian, be consulted in the preparation of mine development, operations,
closure and post closure sustainable use plans.
An example of innovate postmining land use development is the redevelopment of an abandoned mine in
Cornwall called the Eden Project.

In planning for closure, there are four key objectives that must be considered:
1.
2.
3.
4.

protect public health and safety;
alleviate or eliminate environmental damage;
achieve a productive use of the land, or a return to its original condition or an acceptable
alternative;and,
to the extent achievable, provide for sustainability of social and economic benefits resulting from
mine development and operations.

Impacts that change conditions affecting these objectives are often broadly discussed as
the 'impacts' or the environmental impacts of a site or a closure plan. It is convenient to
consider potential impacts in four groupings:
1.

2.

3.

4....
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