×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Gravel mining operation

Gravel mining operation

Gravel mining operation

(OP)
I am doing a geological assessment for a client and have to provide a value for the proposed mining.  We have collected the soil boring information and ran the pertinent tests.  We have found that there are lenses of gravel that contain approximately 30% gravel, with the remaining 70% meeting the ASTM C33 spec for sand (concrete sand).  I have determined that there is approximately 130,000 cubic yards of gravel and 980,000 cubic yards of sand.  Does anybody have any idea of what this material would be worth?  Specifically, I would like to know what the value of ASTM C33 sand is worth and what the gravel is worth.  Thanks.

RE: Gravel mining operation

depends on location and state of the economy. suggest you call a few local contractors or talk with the construction engineers at your county or state DOT.

RE: Gravel mining operation

While doing the local check, see if any sites are under water and take a dredging type removal, vs what is done in "dry" pit areas.

In some areas, it is necessary to sieve the stuff and re-mix to get proper gradations

Each of the extra steps costs money and should be factored in.

Also, there may be a local market for "bank-run granular material", not requiring any special preparation.   

In freezing areas, low P-200 non-frost susceptible material is valuable.

RE: Gravel mining operation

bank run gravel is generally only used for drainage applications.  Screened gravel might be used to make concrete.  However, road construction generally uses crushed rock. the bank run might be crushed if it is large enough to make road base. concrete sand may have to be "washed" to meet AASHTO specs. your materials should be checked against AASHTO and against the road department specs.

RE: Gravel mining operation

I see 1.50/cubic yard loaded at the pit as standard rate for preferred costumers.  The truckers sell it for $75-100/load depending on the distance.  Material meets 57b specs, pea gravel or clean sand.

RE: Gravel mining operation

The material itself actually has no intrinsiic value. The cost comes from the machinery and staff and infrastructure that is required to extract it, screen it, and stockpile it.

Then there is the cartage costs to get it from the stockpile to the jobsite.

I think you need to talk to a quarry operator.

Another part of the cost is the environmental concerns, you can't just go and dig a big hole anymore.

HTH
Michael

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources