# 43 CFR § 3861.2-4: Supplemental proof of expenditures and improvements

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.2-4

## Section

- **Citation:** 43 CFR § 3861.2-4
- **Heading:** Supplemental proof of expenditures and improvements
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 43—Public Lands: Interior > Subtitle B—Regulations Relating to Public Lands > CHAPTER II—BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR > SUBCHAPTER C—MINERALS MANAGEMENT (3000) > PART 3860—MINERAL PATENT APPLICATIONS > Subpart 3861—Surveys and Plats

## Text

If the value of the labor and improvements upon a mineral claim is less than $500 at the time of survey the mineral surveyor may file with the cadastral engineer supplemental proof showing $500 expenditure made prior to the expiration of the period of publication.

## Nearby sections

- [43 CFR § 3860.1 § 3860.1 Fees.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3860.1.md)
- [43 CFR § 3861.1-1 § 3861.1-1 Application for survey.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.1-1.md)
- [43 CFR § 3861.1-2 § 3861.1-2 Survey must be made subsequent to recording notice of location.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.1-2.md)
- [43 CFR § 3861.1-3 § 3861.1-3 Plats and field notes of mineral surveys.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.1-3.md)
- [43 CFR § 3861.2-1 § 3861.2-1 Particulars to be observed in mineral surveys.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.2-1.md)
- [43 CFR § 3861.2-2 § 3861.2-2 Certificate of expenditures and improvements.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.2-2.md)
- [43 CFR § 3861.2-3 § 3861.2-3 Mineral surveyor's report of expenditures and improvements.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.2-3.md)
- [43 CFR § 3861.2-4 § 3861.2-4 Supplemental proof of expenditures and improvements.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.2-4.md)
- [43 CFR § 3861.2-5 § 3861.2-5 Amended mineral surveys.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.2-5.md)
- [43 CFR § 3861.3-1 § 3861.3-1 Extent of duties.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.3-1.md)
- [43 CFR § 3861.3-2 § 3861.3-2 Assistants.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.3-2.md)
- [43 CFR § 3861.4-1 § 3861.4-1 Payment.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.4-1.md)
- [43 CFR § 3861.5-1 § 3861.5-1 Appointment.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.5-1.md)
- [43 CFR § 3861.5-2 § 3861.5-2 Employment.](https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.5-2.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-43-3861.2-4. Check the current official text before relying on it. Not legal advice.