NV Rev Stat § 519.080 (2021)
2021 Nevada Revised Statutes|Chapter 519 - Purchase, Assaying and Recovery of Ores|NRS 519.080 - Records of assayers and purchasers: Contents.

Every assayer, person, partnership, association or corporation engaged in the business, or who or which may hereafter be engaged, directly, indirectly or occasionally in the business, or who or which, being engaged in other business, shall at any time assay, mill, sample, reduce, ship, transport, buy, purchase, trade in, barter, concentrate, smelt, refine or sell metalliferous-bearing ores, free gold, gold dust, gold amalgam, gold nuggets, gold specimens, gold bullion, free silver, silver nuggets, silver bullion, lead or lead bullion, copper or copper bullion, shall keep and preserve a book of records thereof, in which shall be entered at the times they shall occur the following entries, with the dates thereof:  1. The name of the assayer, person, persons, partnership, association or corporation on whose behalf such ore, free gold, gold dust, gold amalgam, gold nuggets, gold specimens, gold bullion, free silver, silver nuggets, silver bullion, lead, lead bullion, copper or copper bullion is delivered, or purchased, or sampled, or transported, or sold, or reduced, or smelted, or milled, as the case may be.  2. The weight or quantity thereof, and a short description of each and every lot or consignment thereof.  3. The name or names of the teamster or teamsters, packer or packers, or other person or persons actually delivering or transferring the same, and each and every portion of the same, and the name or names of the owner or owners of the team, pack train, railway or express company, automobile or other conveyance used or employed in and for such delivery.  4. The name and location of the mine, mining claim, mining location, or other premises from which the same has been or purports to have been extracted, mined or procured, and if the products or property consists of concentrates, amalgam, bullion concentrates, free gold or free silver, there shall also be recorded the name and location of the mill, concentrator, refinery or smelter which milled or purported to have milled, reduced, concentrated, smelted or refined the same, and for whom such milling, reducing, refining, concentration or smelting was done.  5. The date of the receipt thereof, and whether received by purchase, barter, trade or gift, or for treatment, concentration, reduction, sampling, refining, assay, transportation, sale, exchange or otherwise.  6. Whenever the assayer, person, partnership, association or corporation receiving any property hereinabove specifically designated shall become the owner thereof by purchase, barter, trade or exchange, there shall also be recorded in the book a statement showing the amount and terms of such purchase, barter, trade or exchange.  7. Whenever the assayer, person, partnership, association, or corporation receiving any property herein specifically designated shall as agent, factor, broker or in any other capacity sell, barter, trade or exchange the same for and in behalf of the owner or reputed owner thereof, there shall also be recorded in the book the date, names of the persons, the amount and character of the property sold or disposed of, and the amount of such transaction.  8. The interest, if any, of the delivering person, partnership, association or corporation in the property or any part thereof hereinabove specifically designated, whether as owner, lessee, pledgee, superintendent, foreman or workman in the mine, mining claim, mining location, premises, mill, concentrator, sampler, refiner or smelting works from which the same was or purports to have been mined or treated.  [1:193:1907; RL § 2483; NCL § 4181]