Stone, Sand and Gravel REVIEW - May/June 2018 - 39

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Tailings release into active pit.

Tailings Dam
Safety Considerations
MOST OPERATIONS USE WET processes resulting in tailings, a mixture
of water and mineral particles. The operations must store this mixture
on site in ponds for a sufficient time for the mineral particles to settle
out. We refer to these ponds as tailings impoundments and tailings dams.
Design of impoundments requires specialized engineering knowledge. The
owner should consider involving a registered professional engineer with
dam design experience. The design should address these issues: foundation
suitability, construction materials, tailings production rates, precipitation
inflow and use of spillways or pumps to control the pool level, seepage and
slope stability.
While safe dams require good design, it is important that those performing
the construction take care in making the design a reality. Proper foundation
preparation, placement and compaction of dam material, installation of
decant pipes and spillways all play a major role in the successful completion
of the project. It is crucial that the designer's construction plans be followed and that the designer is consulted if field conditions differ from plan.
During the design process, an operations manual should be written to
govern how the impoundment is operated. Regular inspection should be
conducted by qualified personnel during construction as well as operation to
confirm the dam's continued adequacy. Inspections should also be performed
after extreme precipitation and earthquakes. As long as the impoundment
has the ability to impound water, it must be regularly inspected.
Get more details at www.msha.gov.
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STONE, SAND & GRAVEL REVIEW, www.nssga.org 39


http://www.msha.gov http://www.nssga.org

Table of Contents for the Digital Edition of Stone, Sand and Gravel REVIEW - May/June 2018

Aggregates News Blasts
ROCKPAC Breaks Records
Everything Was Bigger in Texas
Enhanced Reclamation Creates a Bridge Over (Historically) Troubled Waters
Q&A With Congress
More Crops, Lower Costs – Agricultural Lime May Be the Key
Rip & Share
Products & Services Guide
Services & Supplies Guide
Index of Advertisers
Stone, Sand and Gravel REVIEW - May/June 2018 - Intro
Stone, Sand and Gravel REVIEW - May/June 2018 - cover1
Stone, Sand and Gravel REVIEW - May/June 2018 - cover2
Stone, Sand and Gravel REVIEW - May/June 2018 - 3
Stone, Sand and Gravel REVIEW - May/June 2018 - 4
Stone, Sand and Gravel REVIEW - May/June 2018 - 5
Stone, Sand and Gravel REVIEW - May/June 2018 - 6
Stone, Sand and Gravel REVIEW - May/June 2018 - 7
Stone, Sand and Gravel REVIEW - May/June 2018 - 8
Stone, Sand and Gravel REVIEW - May/June 2018 - Aggregates News Blasts
Stone, Sand and Gravel REVIEW - May/June 2018 - 10
Stone, Sand and Gravel REVIEW - May/June 2018 - ROCKPAC Breaks Records
Stone, Sand and Gravel REVIEW - May/June 2018 - 12
Stone, Sand and Gravel REVIEW - May/June 2018 - 13
Stone, Sand and Gravel REVIEW - May/June 2018 - 14
Stone, Sand and Gravel REVIEW - May/June 2018 - 15
Stone, Sand and Gravel REVIEW - May/June 2018 - 16
Stone, Sand and Gravel REVIEW - May/June 2018 - 17
Stone, Sand and Gravel REVIEW - May/June 2018 - 18
Stone, Sand and Gravel REVIEW - May/June 2018 - 19
Stone, Sand and Gravel REVIEW - May/June 2018 - Everything Was Bigger in Texas
Stone, Sand and Gravel REVIEW - May/June 2018 - 21
Stone, Sand and Gravel REVIEW - May/June 2018 - 22
Stone, Sand and Gravel REVIEW - May/June 2018 - 23
Stone, Sand and Gravel REVIEW - May/June 2018 - 24
Stone, Sand and Gravel REVIEW - May/June 2018 - 25
Stone, Sand and Gravel REVIEW - May/June 2018 - 26
Stone, Sand and Gravel REVIEW - May/June 2018 - 27
Stone, Sand and Gravel REVIEW - May/June 2018 - 28
Stone, Sand and Gravel REVIEW - May/June 2018 - Enhanced Reclamation Creates a Bridge Over (Historically) Troubled Waters
Stone, Sand and Gravel REVIEW - May/June 2018 - 30
Stone, Sand and Gravel REVIEW - May/June 2018 - 31
Stone, Sand and Gravel REVIEW - May/June 2018 - 32
Stone, Sand and Gravel REVIEW - May/June 2018 - Q&A With Congress
Stone, Sand and Gravel REVIEW - May/June 2018 - 34
Stone, Sand and Gravel REVIEW - May/June 2018 - 35
Stone, Sand and Gravel REVIEW - May/June 2018 - 36
Stone, Sand and Gravel REVIEW - May/June 2018 - More Crops, Lower Costs – Agricultural Lime May Be the Key
Stone, Sand and Gravel REVIEW - May/June 2018 - 38
Stone, Sand and Gravel REVIEW - May/June 2018 - Rip & Share
Stone, Sand and Gravel REVIEW - May/June 2018 - 40
Stone, Sand and Gravel REVIEW - May/June 2018 - Products & Services Guide
Stone, Sand and Gravel REVIEW - May/June 2018 - 42
Stone, Sand and Gravel REVIEW - May/June 2018 - Services & Supplies Guide
Stone, Sand and Gravel REVIEW - May/June 2018 - 44
Stone, Sand and Gravel REVIEW - May/June 2018 - 45
Stone, Sand and Gravel REVIEW - May/June 2018 - 46
Stone, Sand and Gravel REVIEW - May/June 2018 - 47
Stone, Sand and Gravel REVIEW - May/June 2018 - 48
Stone, Sand and Gravel REVIEW - May/June 2018 - Index of Advertisers
Stone, Sand and Gravel REVIEW - May/June 2018 - 50
Stone, Sand and Gravel REVIEW - May/June 2018 - cover3
Stone, Sand and Gravel REVIEW - May/June 2018 - cover4
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