The pixel that is worth 5,333 tonnes in one panel and 7 in the next

Dark navy board slide, masthead “Ridgeline Materials Group · Critical minerals desk · Supply briefing, FY27”, headlined “Six critical minerals, six years — and every one of them is at a record”. A subhead reads: world mine production for the six minerals on the FY27 qualification list, as published by the U.S. Geological Survey — one source, one unit, six full calendar years, every value printed on the slide; the six panels are identical, same chart, same size, same years, same order, and every one of them starts at zero; nothing is indexed, nothing is smoothed, nothing is set aside. Filling the left of the slide, under the label “World mine production · metric tons · USGS Mineral Commodity Summaries · 2019–2024”, is a three-by-two grid of six small column charts, each in its own bordered card. Every panel carries the mineral’s name at the top left, a growth multiple in gold at the top right, a one-line note on what is being counted, six blue columns for 2019 to 2024 with the last one picked out in gold, and two axis labels down the left edge: “0” at the baseline and the panel’s maximum at the top. The panels read: Natural graphite, ×1.45, natural graphite gross weight, axis to 1,600,000; Rare earths, ×1.77, rare-earth-oxide equivalent, axis to 390,000; Cobalt, ×2.01, cobalt content, axis to 290,000; Lithium, ×2.79, lithium content excluding U.S. production, axis to 240,000; Vanadium, ×1.15, vanadium content, axis to 105,000; Tantalum, ×1.14, tantalum content, axis to 2,100. In five of the six the gold 2024 column reaches the top of its frame; in vanadium it stops just short, a little below the 2021 column. All six panels show the same silhouette — flat or slightly lower in 2020, then a climb to the right. Below the grid sits a table headed “Metric tons, mine production” listing all thirty-six figures by year, with the 2024 column in gold: natural graphite 1,100,000, 1,100,000, 1,130,000, 1,300,000, 1,530,000, 1,600,000; rare earths 220,000, 240,000, 290,000, 300,000, 376,000, 390,000; cobalt 144,000, 140,000, 165,000, 190,000, 238,000, 290,000; lithium 86,000, 82,000, 107,000, 130,000, 204,000, 240,000; vanadium 86,800, 86,000, 105,000, 100,000, 104,000, 100,000; tantalum 1,850, 1,700, 1,840, 2,000, 2,040, 2,100. A caption under the table notes that the highlighted column is 2024, the last bar in every panel above, and that each panel is drawn on its own axis, printed at the panel’s top-left corner. Down the right-hand side, a gold-bordered card carries “6 / 6” over the line “Minerals finishing the window at or within 5% of their six-year high”. A gold card headed “Read-out for the board” argues that the ramp is broad-based, that every one of the six streams ends the window at its high with the same shape in every panel, that there is no single bottleneck and no laggard to write off because the whole basket is moving together, and recommends splitting the FY27 qualification budget evenly across all six streams on one reporting cadence. A card headed “Why six small panels” says that one chart per mineral, drawn identically, is the standard way to put several series in front of a board at once, because the design is held constant so that anything the eye picks up is a difference in the data. A card headed “Every number is on the slide” says the table carries all thirty-six figures and each panel prints its own axis, so nothing has to be taken on trust. A final card, “Basis of measurement”, gives source USGS Mineral Commodity Summaries, “World mine production and reserves”, world total (rounded); unit metric tons throughout; years 2019–2024, each as first published; coverage worldwide, all reporting countries. Three ticked boxes run along the bottom: “Every panel starts at zero. No truncation, no axis break, no log scale, no second axis anywhere on this slide”, “One source, one unit. Metric tons of mine production, from one publisher, for all six minerals and all six years”, and “Six identical panels. Same chart type, same dimensions, same six years in the same order, and each panel’s axis printed on it”. A footnote credits the USGS Mineral Commodity Summaries world mine production tables, notes that each year is taken from the edition in which it first appeared — 2019 and 2020 from MCS 2021, 2021 and 2022 from MCS 2023, 2023 and 2024 from MCS 2025 — that the 2020, 2022 and 2024 figures are USGS estimates, that rare earths are rare-earth-oxide equivalent and lithium is contained lithium excluding U.S. production, and states that the slide is a demonstration drawn by us in the manner of a sourcing briefing, has never been published anywhere, and that the production figures are real. — Showing the misleading chart

The same figures on a cream background, kicked “The same thirty-six numbers · measured off the drawing · USGS world mine production · 2019–2024” and headlined “One pixel is 5,333 tonnes in the first panel and 7 in the last.” A subhead explains that every number on the slide is right, every panel starts at zero, and the six panels are drawn to six different rulers: each panel’s axis was fitted to its own series, so the last bar reaches the top of the frame in five of the six, and those bars stand for 1,600,000 t, 390,000 t, 290,000 t, 240,000 t and 2,100 t — nothing inside a panel is wrong, and what the grid invents is the comparison between panels, which is the only reason to put six charts in one frame. Across the top, under the label “All six on one zero-based axis · world mine production, thousand metric tons · the same six series, the same six years”, sits one wide line chart with gridlines at 0, 400, 800, 1,200 and 1,600 thousand tonnes. A thick gold line for natural graphite runs across the upper part of the panel, flat near 1,100 through 2021 and climbing to 1,600 by 2024. Far below it, four lines are bunched between 80 and 390 — rare earths, cobalt, lithium and vanadium — and a red line for tantalum lies flat along the zero rule. Leader lines carry each series to a label at the right with its 2024 figure: Natural graphite 1,600,000 t, Rare earths 390,000 t, Cobalt 290,000 t, Lithium 240,000 t, Vanadium 100,000 t, Tantalum 2,100 t. Beneath it sit three small panels. The first, “The last bar of every panel · as drawn”, shows six columns of exactly equal height standing on one rule, labelled Graphite, Rare earths, Cobalt, Lithium, Vanadium and Tantalum, each with its value printed vertically inside it — 1,600,000, 390,000, 290,000, 240,000, 100,000 and 2,100 — under the caption “Six bars the same height. The tallest quantity is 762× the shortest.” The second, “The same six, drawn to one ruler · 2024, t”, is a sorted horizontal bar chart on one zero-based axis: natural graphite 1,600,000 as a long gold bar, then rare earths 390,000, cobalt 290,000, lithium 240,000, vanadium 100,000, and tantalum 2,100 as a hairline, captioned “Tantalum’s bar is 0.4 px wide here. On the slide it filled its frame.” The third, “Growth, on one shared axis · 2019 = 100”, plots all six indexed series against gridlines at 100 to 300, ending at Lithium 279, Cobalt 201, Rare earths 177, Natural graphite 145, Vanadium 115 and Tantalum 114, captioned “A ranking the grid could not give: the panels’ shapes are near-identical.” Five cards run down the right. “Six panels, six rulers” tabulates each panel’s axis maximum against the tonnes one pixel of height is worth: natural graphite 1,600,000 and 5,333; rare earths 390,000 and 1,300; cobalt 290,000 and 967; lithium 240,000 and 800; vanadium 105,000 and 350; tantalum 2,100 and 7 — noting that each panel’s plot is 300 px tall, and that the exchange rate between the first row and the last is 762×, the one number the slide never printed. “What the grid was offering” says six charts in one frame is a promise that only the data changes from panel to panel, and that here the chart type, size, years, order and baseline are all held constant while the scale is not, which is the one constant that was doing the work. “What survives and what does not” says the ratios inside a panel are sound — lithium really did rise ×2.79 and its panel says so — while the ratios across panels are not: lithium added 154,000 t and tantalum 250 t, a gap of 616 : 1 drawn as two similar climbs. “Where the tonnes actually went” records that the six added 983,450 t a year between 2019 and 2024, that graphite alone is 50.8% of that and 61.0% of the 2024 total while tantalum is 0.08%, and that “broad-based” is a claim about amounts, which were the one thing the grid could not show. “What a shared axis does not settle” notes that tonnes of graphite and tonnes of tantalum are the same unit and not the same thing — one a bulk anode feedstock, the other sold by the kilogram — so a shared axis is the honest way to see how little tantalum the world mines and not a claim that a tonne of each matters equally. “What the slide got right” lists one publisher, one unit, six full calendar years, six identical panels, zero baselines throughout, all thirty-six values tabulated and each panel’s maximum printed on it — seven things right, and fitting six axes to six series was enough on its own. A gold-ruled callout at the foot reads “A small multiple is an argument that only the data changed,” and explains that this is the whole mechanism — repeat one design, vary one thing, let the eye do the comparing — that an axis fitted per panel breaks the promise without changing the picture, that it is almost always a default rather than a decision (scales = “free_y”, one chart object per series in a spreadsheet, a dashboard widget that fits each tile to its own data), and that the check takes ten seconds: read the top number on every panel, and if it changes, nothing on that page is being compared with anything else on it. A footnote gives the USGS sources and edition rule, lists all thirty-six production figures in full, notes the unit definitions and that pixel figures are quoted for the published 3,200 × 1,800 images, gives the retrieval date, and says both drawings are our own. — Showing the misleading chart

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Six critical minerals, six years of USGS world mine production, six identical panels — every one of them zero-based, every one of the thirty-six figures printed underneath. Each panel’s axis was fitted to its own series, so the last bar reaches the top of the frame in five of the six, and those bars stand for 1,600,000 tonnes, 390,000, 290,000, 240,000 and 2,100. Nothing inside a panel is wrong; the comparison between panels is the autoscaler’s.

U.S. Geological Survey, Mineral Commodity Summaries — “World Mine Production and Reserves” world totals for graphite, rare earths, cobalt, lithium, vanadium and tantalum, editions of 2021, 2023 and 2025, 2025Added August 25, 2026

01The claim

Here is world mine production for the six critical minerals on the FY27 qualification list, as published by the U.S. Geological Survey: one source, one unit, six full calendar years, and every one of the thirty-six figures printed in a table under the panels. The six charts are identical — same chart type, same dimensions, same six years in the same order — and every one of them starts at zero. There is no truncation, no axis break, no log scale and no second axis anywhere on this slide. Nothing is indexed, nothing is smoothed, nothing is set aside. Each panel even prints its own axis in its top-left corner, so nothing has to be taken on trust: read the panel for the shape and the table for the number. And the shape is the same in every panel. Flat or slightly lower through 2020, then a climb that has not stopped, ending at the top of the frame — natural graphite ×1.45, rare earths ×1.77, cobalt ×2.01, lithium ×2.79, vanadium ×1.15, tantalum ×1.14. Six out of six finish the window at or within 5% of their six-year high. The ramp is broad-based: there is no single bottleneck here, and no laggard to write off. Recommendation: split the FY27 qualification budget evenly across all six streams and hold one reporting cadence for each.

02The trick

Six charts in one frame is a promise, and the promise is that only the data changes from panel to panel. That is the entire mechanism of a small multiple: hold the design constant — the chart type, the size, the years, the order, the baseline, the scale — and whatever difference the eye then finds is a difference in the numbers. This slide holds five of those six constant. The axis in each panel was fitted to its own series, and the axis was the one that mattered. Read the maxima printed in the corners and they run 1,600,000, 390,000, 290,000, 240,000, 105,000 and 2,100 tonnes. Every panel’s plot is the same 300 pixels tall, so one pixel of height is 5,333 tonnes in the graphite panel and 7 tonnes in the tantalum panel — an exchange rate of 762 to 1, and the one number the slide never prints. That is why five of the six last bars reach the top of the frame: an autoscaler puts every series’ peak at 100% of its frame, which means the six bars the reader is invited to compare are exactly the same height and stand for 1,600,000, 390,000, 290,000, 240,000, 100,000 and 2,100 tonnes. The uncomfortable part is that no panel is wrong. Each is a correct, zero-based bar chart of a real series, and the ratios inside a panel survive intact: lithium really did rise ×2.79, and its panel says so honestly. It is the ratios across panels that the layout has invented, and those are the only ratios a grid is for. Put the six on one zero-based axis and the picture rearranges completely. Graphite is 61.0% of the 2024 total of 2,622,100 tonnes; tantalum is 0.08%, a bar 0.4 pixels wide next to graphite’s. Of the 983,450 tonnes a year the basket gained between 2019 and 2024, graphite alone is 50.8%. Lithium added 154,000 tonnes and tantalum added 250 — a gap of 616 to 1, drawn as two similar climbs. Even the growth reading needs its own shared axis to be safe: indexed to 2019 = 100 the six finish at 279, 201, 177, 145, 115 and 114, a clean ranking that six near-identical silhouettes actively scramble. And “broad-based” was a claim about amounts, which is the one thing six free axes cannot show. (The slide is our own demonstration, drawn in the manner of a sourcing briefing. The production figures are real, from the USGS.)

03The fix

Share the axis. That is not a refinement of a small multiple, it is the thing that makes it one — so the first answer is a single zero-based scale for the whole grid, drawn once at the edge, and if that flattens five panels into a line along the bottom then the flattening is the finding, not a problem to be autoscaled away. A reader who sees tantalum lying on the zero rule beside graphite has learned the most important fact about that basket in one glance, and it is the fact the free-scale version was hiding. Then ask which question the grid is actually for, because level and growth are different charts of the same data. If the question is amount, keep the shared axis and let the giant be a giant. If it is growth, index every series to a common base year and share that axis instead — and print each panel’s level in the corner, so nobody carries a rate away as a size. Saying which of the two you are showing costs one line of caption and settles most of the argument. Where one series genuinely lives orders of magnitude below the rest, give it its own panel at its own scale and separate it visually: a rule, a gap, a heading that says the scale changes here. At that point they are not a small multiple any more, they are several charts sharing a page, and the reader is entitled to know which they are looking at. And where free scales are unavoidable — an exploratory grid of forty series, a dashboard nobody will re-cut — then at minimum print each panel’s maximum large enough to read, repeat the unit on every panel, and never let a headline draw a conclusion across panels, because the axis maximum is the exchange rate and a grid that hides its exchange rates will be read as a comparison it cannot support. None of this is exotic: free scales are a default rather than a decision almost every time they appear, from ggplot2’s scales = "free_y" to one chart object per series in a spreadsheet to a tile grid that fits each tile to its own data. Which is also why the check is so cheap. Read the top number on every panel. If it changes from panel to panel, nothing on that page is being compared with anything else on it.