The first two words of the poem rise and fall at once. "Rose fell from Vaudeville fame" reads, for a split second, as though Rose (the verb) is climbing, until "fell" cancels it. Rose is only a name, but a whole career, up and then down, is staged before the first line is over. A name that is also a flower will matter again by the end, when the poem moves toward graves.
On the surface, the poem is a piece of gossip. A woman who once performed in variety shows now dances on her "old man's / Steam shovel." Then the speaker adds a darker thought: in 1918 her friends "Were buried in plague pits / Carved out of the earth / By the same machine." The year suggests the influenza pandemic, though the poem names only the plague pits. The central idea is the uncomfortable closeness of ordinary life and mass death. The machine that gives Rose a stage, and perhaps a living, is the one that dug the graves. She dances on top of it, and the poem lets the phrase work literally and figuratively, since "dances on top of" is close to "dances on the graves of." Whether she does so knowingly, defiantly or innocently, the poem never says.
The form carries much of this. There is no rhyme, no punctuation and no regular metre. The poem is built from short, plain, speech-like fragments, as though someone were telling the story over a fence. The first sentence runs long and loose, but the later lines sit alone, one at a time, with white space between them, and the pace slows. The enjambment in "her old man's / Steam shovel" is especially well judged. The line stops on a possessive, so we wait for the noun, and the noun arrives isolated and heavy. Nothing about "Steam shovel" sounds glamorous, which is the point. Vaudeville has been replaced by hardware.
The poem also turns on a change of direction, marked by "And to think that." This is the phrase of someone shaking their head, half amused and half appalled. It shifts the poem from the present to the past, and from comic decline to something grim. The little line "Her friends" gets a space to itself, so the reader has to take in the word before learning what happened to them. The poem doesn't say who these friends were. It only insists that they were hers, which makes the loss personal rather than statistical. The verb "Were buried" is passive, and it hides who did the burying. What the poem gives us instead is the agent: "the same machine." The final line is the only one that points a finger, and it points at an object rather than a person.
Vertical imagery runs underneath everything. Rose falls, then dances on top, while her friends lie in pits "Carved out of the earth." Surface and depth, performance and burial, sit in one picture. The word "carved" is worth pausing on. It belongs to sculpture and craft, and here it describes the digging of mass graves, so something delicate-sounding is attached to a brutal job. The title supplies the poem's material contrast: "Iron" is the shovel, hard and working, and "Dust" is what bodies and stages and fame come to. Dust also suggests the old phrase "dust to dust," so the title quietly sets the machine and mortality against each other.
What makes the poem worth reading is its restraint. It gives no speeches about grief and no moral about progress. It places two facts next to each other, a woman's comedown and a pandemic's burial work, and trusts the reader to feel the clash. The tone stays casual even as the content darkens, which is unsettling in itself. Everyday life goes on, and people dance on the same ground where others were put away. The poem suggests this may be how survival works, and that something may be lost when a catastrophe becomes just an item in an anecdote.