# Iwo Jima fragment table — original supplied transcription ## Read before reusing Supplied by Carrie A. Shuster, 23 October 2026. The original table follows unchanged. This file is a source transcription, not a validated analytical report. - Material and source labels such as “projectile alloy,” “primer” and “high-intensity shell zone” are unverified interpretations. Elemental concentrations alone do not establish ammunition type, wartime origin or shelling intensity. - The author clarified that N/A means nondetect, not zero or elemental absence. Detection limits are unavailable. Unmarked concentrations are ppm (mg/kg); percent entries retain their original notation. - The supplied Averages row is not fully reproducible from the listed values. Quantified-only recalculations give Mn 3,097.95, Pb 132.10 and Hg 14.10 mg/kg, compared with supplied values of 3,357, 120 and 14.2. Quantified-only means exclude nondetects and above-range readings and are not means of all 38 records. - Sample relationships, collection/scan dates and overlap with the sand study or other summaries remain unresolved. Do not pool these as independent observations. - Raw instrument records, detection limits, calibration verification and fragment selection methods have not been reviewed for this display. Current context: https://residuals.info/iwo-jima.html#fragment-results ## Original table (unchanged) | **Sample** | **Fe** | **Cu** | **Zn** | **Mn** | **Co** | **Ba** | **Hg** | **Pb** | **As** | **Interpretation** | | :----------: | :----: | :----: | :----: | :----: | :----: | :----: | :----: | :----: | :----: | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------: | | **1** | >10% | 49 | N/A | 3638 | 4675 | 3264 | N/A | 208 | N/A | Steel + Pb projectile alloy | | **2** | >10% | N/A | 44 | 3556 | 4030 | 2763 | N/A | N/A | 32 | Steel + brass + Pb | | **3** | >10% | N/A | 221 | 2435 | 1782 | 1482 | 8 | 29 | N/A | Mixed: steel + brass + Pb + primer | | **4** | >10% | 188 | 1783 | 3790 | 4446 | 2311 | 13 | 191 | N/A | Mixed: high-intensity shell zone | | **5** | 3.31% | 31 | 131 | 1133 | 560 | 380 | 7 | 7 | 5.1 | Steel + brass + primer trace | | **6** | 9.12% | 29 | 166 | 1802 | 1214 | 740 | 9.8 | 7 | 5.5 | Steel + brass + Pb | | **7** | >10% | 33 | 199 | 2032 | N/A | 868 | 7.9 | 9.2 | 7.4 | Brass + Pb + primer | | **8** | >10% | 45 | 441 | 3500 | N/A | N/A | 11 | 158 | N/A | Brass + primer | | **9** | >10% | 23 | 413 | 4334 | 6218 | 4298 | 20 | 270 | N/A | Mixed: steel + brass + Pb + primer | | **10** | >10% | 42 | 372 | 4466 | 5040 | 3621 | 12 | 267 | N/A | Mixed: steel + brass + Pb | | **11** | >10% | 67 | 418 | 3862 | 7399 | 3733 | N/A | 213 | N/A | Mixed: steel + brass + Pb | | **12** | >10% | 191 | 2473 | 4172 | 7191 | 4288 | 20 | 311 | N/A | Mixed: steel + brass + Pb | | **13** | >10% | 148 | 1659 | 4183 | 6598 | 4298 | N/A | 333 | N/A | Mixed: steel + brass + Pb | | **14** | >10% | 460 | 5101 | 3867 | 7798 | 3346 | 15 | 262 | N/A | Very high-intensity mixed shrapnel | | **15** | >10% | 58 | 908 | 4328 | 6194 | 4387 | N/A | 318 | N/A | Mixed: steel + brass + Pb | | **16** | 8.01% | >10% | >10% | 2365 | N/A | 1706 | N/A | N/A | N/A | Strongly metallic, multi-alloy fragment | | **17** | >10% | 42 | 357 | 3230 | N/A | 2596 | 13 | 100 | N/A | Brass + steel + Pb | | **18** | 3.58% | 22 | 118 | 1205 | 512 | 390 | N/A | 8.2 | 5.3 | Steel + brass + Pb (lower intensity) | | **19** | >10% | 51 | 346 | 3267 | 2844 | 2002 | 23 | 98 | N/A | Mixed: steel + brass + Pb | | **20** | 3.95% | 26 | 1270 | 1270 | 626 | 378 | N/A | 10.5 | N/A | Steel + brass + Pb | | **21** | 4.72% | 24 | 164 | 1359 | 657 | 348 | N/A | 14.9 | 4.6 | Steel + brass + Pb | | **22** | 4.49% | 26 | 144 | 1356 | 692 | 440 | 6.8 | 13.3 | N/A | Steel + brass + Pb | | **23** | 5.02% | 33 | 155 | 1468 | 1468 | 472 | 5.5 | 12.4 | 5.3 | Steel + brass + Pb + V (hardened steel) | | **24** | >10% | N/A | 344 | 3700 | N/A | 3530 | 27 | 153 | N/A | Brass + Pb | | **25** | >10% | 54 | 302 | 3594 | 4782 | 2636 | N/A | 156 | N/A | Steel + brass + Pb | | **26** | >10% | 34 | 191 | 2501 | 1742 | 1305 | N/A | 23 | N/A | Steel + brass + Pb | | **27** | >10% | 20 | 161 | 2533 | 1751 | 1526 | 14 | 13 | N/A | Steel + brass + Pb | | **28** | >10% | 16 | 195 | 2950 | 2891 | 1417 | N/A | 35 | N/A | Steel + brass + Pb | | **29** | >10% | 38 | 171 | 2429 | 1815 | 1670 | N/A | 39 | N/A | Steel + brass + Pb | | **30** | >10% | 34 | 213 | 2907 | 2681 | 1636 | 19 | 84 | N/A | Steel + brass + Pb | | **31** | >10% | 33 | 262 | 3512 | 3253 | 2381 | 13 | 92 | N/A | Steel + brass + Pb + V | | **32** | >10% | 40 | 289 | 3470 | 3627 | 2709 | 17 | 109 | N/A | Steel + brass + Pb | | **33** | >10% | 29 | 351 | 3904 | 4003 | 2890 | N/A | 165 | N/A | Steel + brass + Pb | | **34** | >10% | 33 | 365 | 4012 | 5289 | 2914 | N/A | 206 | N/A | Steel + brass + Pb | | **35** | >10% | 44 | 363 | 3798 | 5099 | 2937 | N/A | 157 | N/A | Steel + brass + Pb | | **36** | >10% | 41 | 363 | 3899 | 4784 | 2936 | 20 | 200 | N/A | Steel + brass + Pb | | **37** | >10% | 32 | 393 | 3928 | 5679 | 4168 | N/A | 233 | N/A | Steel + brass + Pb + V | | **38** | >10% | 36 | 427 | 3967 | 6381 | 4024 | N/A | 250 | N/A | Steel + brass + Pb | | **Averages** | >10% | 61 | 591 | 3357 | 3749 | 2346 | 14.2 | 120 | 9.31 | Composite signature of mixed WWII shrapnel: oxidized steel alloys (Mn–Co–Fe), brass fragments (Cu–Zn), Pb-bearing projectile residue, and scattered primer-derived Hg and As. |