Terms of use and disclaimer
These terms apply to this site, its calculators and our booking forms.
Estimating aid only. Each calculator is an educational tool. It is not an engineering design and it is not a substitute for the judgment of a competent or qualified person.
No warranty. They are provided "as is", without warranty of any kind, express or implied, including any implied warranty of merchantability or fitness for a particular purpose. Equations and constants are cited to their published sources on each page, but transcription, implementation and the values you enter can all be wrong. Verify every result against the cited source and against your own site conditions before it informs a decision.
Not a statutory document. Nothing produced here is a ground control plan, ventilation plan, blast design, haul road design or hoist design. Those must be prepared, signed and approved under the regulations that apply to your operation. Compliance with MSHA, or with your own jurisdiction's mining regulations, is the operator's responsibility and remains so.
Assumption of risk. You use these tools entirely at your own risk. Mining is hazardous, and errors in ground support, ventilation, blasting or haulage can cause serious injury or death.
Limitation of liability. To the maximum extent permitted by law, Big Dog Mining and its owners, operators and contributors accept no liability for any loss, damage, injury, death, cost or claim, whether direct, indirect, incidental or consequential, arising out of or in connection with the use of these tools or reliance on their output.
Indemnity. By using these calculators you agree to indemnify and hold harmless Big Dog Mining and its owners, operators and contributors against any claim, demand, loss, liability or expense, including reasonable legal fees, arising from your use of them or from any decision taken in reliance on them.
If you do not accept these terms, do not use these calculators.
Booking a call and messaging
Booking. When you book a call through our forms, you agree that the information you give us is accurate and that you are authorized to share it for your company. A booked call is an introductory conversation. It is not an offer, a quote or a contract.
Text messages. If you check the consent box, or agree on a call with our team, you agree to receive text messages from Big Dog Mining at the number you provided, including confirmations, reminders and messages about our services. Consent is not a condition of booking. Message frequency varies. Message and data rates may apply. Reply STOP to opt out at any time, or HELP for help. Carriers are not liable for delayed or undelivered messages.
Age. Our services, booking forms and text messages are for business contacts who are 18 or older. You must be at least 18 to book a call or agree to receive texts from us.
Privacy. How we handle your information is set out in our privacy policy.
Who we are and contact. Big Dog Mining is operated by Leadlock LLC, 3033 Ridgeline Blvd B2, Tarpon Springs, FL 34688. dan@bigdogmining.com, +1 (650) 334-0495.