EXPOSED
This job is chipping out spalled brick and slag inside cooled furnaces, ladles and kilns, mixing and gunning castable refractory, cutting and fitting shapes in confined, hot, dust-choked spaces — none of it is screen work and none of it is within reach of current robotics. AI can help with mix specs, wear-life records and shutdown scheduling, not with crawling into a ladle. The real threat to this 1,000-person occupation is the contraction of domestic steel, foundry, glass and cement capacity, not language models.
Dipped in 2020, then grew past where it started.
Median pay $53,990 → $61,290 -9.2% in real terms
This line is counted by the Bureau of Labor Statistics — the one figure on this page that isn't a judgement of ours. Headcount moves on demand, offshoring, demographics and the business cycle, and automation is one term among several, often not the loudest.
So a falling line is not evidence that AI did it, and a rising one is not evidence that it won't. Both happen in this register: some occupations resist automation and shrink anyway, others are highly automatable and keep growing. The marked year is 2020.
BLS projection, 2024–2034
-16.9% 1,100 → 900 on the projections basis
Shrinking, but not obviously because of AI
The BLS projects -16.9% by 2034, but at 65/100 this work is only moderately exposed — not the profile of a job current AI can simply do. Occupations shrink for many reasons, and the score does not point at automation as this one's cause.
Different clocks. The score is what current AI could do to this work today. The projection is how many of these jobs will exist in 2034. Everything between the two — how fast employers actually adopt, whether demand grows in the meantime — is why they can point opposite ways without either being wrong.
~100 openings a year on average, including replacing people who leave.
StopperLadle LinerCell RelinerHot RepairmanStopper MakerLadle RepairerCupola RepairerLadle RepairmanFurnace RepairerKiln Door BuilderRefractory WorkerKiln Door RepairerRefractory RepairerRefractory BricklayerRefractory TechnicianClay Structure BuilderClay Structure ServicerOven Equipment RepairerBondactor Machine OperatorRefractory Furnace DesignerConcrete Caulking TechnicianPlastic Block Boiler RelinerRefractory Materials Repairer
Holding it up: embodiment . Weakest point: liability shield .
Tasks largely resist digitisation Breaking out a spalled ladle lining with a chipping hammer, judging by sound and feel where the safe brick starts, then laying new shapes to a curved profile with expansion allowance is entirely manual craft work with no digital analogue — an 18 rather than 20 only because gunning castable and shotcrete placement is already partly machine-fed and mix design, wear mapping and reline scheduling are moving to software.
Hands-on in uncontrolled environments You enter cooled but still-warm vessels through a manhole, work off scaffolding or a ladder inside a kiln shell, breathe silica and alumina dust under a respirator, and handle 60-pound refractory bags in a space with one exit — there is no version of this performed remotely or on a bench, which is why it sits at the ceiling.
Certification preferred, not legally required No state licence exists for refractory repair; what you carry is a confined-space entry permit under 29 CFR 1910.146, a hot-work permit, respirator fit-test records and maybe NCCER credentials — real gatekeeping on who walks into the vessel, but the plant and the refractory contractor own the consequences if a lining fails, not you personally, so it stops at 6.
Meaningful discretion Calling how deep to cut back a damaged lining, whether a hot face can survive one more heat, and when a hairline in the working lining means stop the reline and inspect the safety lining are decisions made on the spot with a shutdown clock running — genuine discretion, but bounded by the refractory supplier's installation spec, cure schedules and the maintenance engineer's sign-off, which keeps it below the 14+ band.
The verdict above describes this occupation as a whole. Almost nobody does the typical version of a job — tick what's actually in your week and see how your own mix sits.
Your task mix speaks to task resistance (18/20 here) — how much of the day's work current AI already does. That is the dimension the boxes above are about.
It cannot move the other three. Liability shield (6/20) is whether the law requires a licensed human to sign. Trust premium (9/20) is whether buyers specifically pay for a person. Judgment and accountability (12/20) is whether the role exists to own consequential calls. Those are facts about the occupation's standing, not about which tasks are in your week — a paralegal who does only trial exhibits still holds no licence. Together they are 27 of this occupation's 65 points (42%).
Embodiment (20/20) is also a property of the work rather than the worker, but we don't tag individual tasks as physical or not, so the picker can't tell you anything about it. That's a limit of this tool, not a claim.
Did we get the list right? Tell us what's missing — the tasks are written from the outside, and you're reading this from the inside.
No occupation passed every test: close enough to refractory materials repairers, except brickmasons on skills and subject matter, at least 10 points more resistant, no big jump in training, no new licence, no pay cut, and not shrinking on its own. That happens for 223 of the 654 occupations here that aren't SAFE, and it is worth stating plainly rather than leaving the section off.
The usual reason is that exposure travels with the skill profile. The jobs most similar to yours tend to be exposed for the same reasons yours is, so the near neighbours don't clear the gap — and the ones that do are a different kind of work, not a transfer of what you already know. Read that as a limit of this method, not a verdict that you're stuck: it only compares whole occupations, and it cannot see specialisation, industry, or anything you'd bring that isn't in a federal skill survey.
Here is that claim on your own job rather than in the abstract. These are the three occupations closest to this one by skill and subject matter — the places the work would most naturally transfer — with what the register scores them:
That is the whole problem in three lines. The nearest work is not meaningfully safer, so there is no move here that trades a similar skill set for a better verdict. This is not us running out of ideas — it is what the neighbourhood looks like.
The moves above are yours to make. This is the other half: what would have to change in the world for the occupation itself to score higher. None of it is in any one person's gift, but it is where the floor actually comes from. Scores here are not a one-way ratchet. Only two of the five dimensions — task resistance and embodiment — track what machines can do. The other three track law, what buyers will pay for, and who is answerable, and those move in both directions, often in response to the same pressure AI creates. If every lever below landed, this occupation would score around 79/100 — SAFE.
Refractory suppliers tying material warranties to installation by their own factory-certified crews (already common practice with monolithic gunning and precast shapes) — buyers then pay specifically for the credentialed human crew, not the cheapest labor. Widening of this warranty-linked crew requirement across cement and glass would raise it.
No new law needed: as thermal-camera wear mapping, mix design and shutdown scheduling get automated, what remains is entirely the confined-space fitting and hot-side judgment tier. This is a genuine two-tier job and the routine tier is the paperwork tier.
Mandatory API 936 certification (already required by many refiners/EPC contracts for FCC and heater refractory installation and QC) extended by insurers or state boiler/pressure-vessel rules to steel-ladle, kiln and glass-tank relining — i.e. a named certified installer/inspector signs off on dryout and cure records and carries personal qualification risk. Also: OSHA 1910.146 permit-required confined space entry already needs a named authorized entrant/attendant; if a rule made the refractory crew lead the accountable competent person for hot-work and shell-integrity sign-off, the shield hardens.
The call that matters is 'can this vessel run one more campaign' — made on visual and hammer-sound inspection of hot shell and residual lining thickness. If plant reliability programs formally designate the refractory lead as the person who authorizes continued service (as some fired-heater and FCC turnaround protocols already do), the ambiguity call becomes owned and documented rather than advisory.
The limit. task_resistance and embodiment are already at or near ceiling; there is no headroom worth chasing there. The binding risk to this occupation is not capability but demand — domestic steel, foundry, glass and cement capacity. No liability or trust lever offsets the closure of the plants that employ these 1,080 people; a rising register score here would coexist with a shrinking headcount.
Adjudication: scored twice independently and the runs disagreed. The change held under every rounding method, so the average was published.
| Birmingham, AL | 50 | $49,260 -20% |
| Houston-Pasadena-The Woodlands, TX | 50 | $67,380 +10% |
| Houston-Pasadena-The Woodlands, TX | 50 | $67,380 +10% |
| Birmingham, AL | 50 | $49,260 -20% |
We have no reported case of a named organisation automating this occupation. Not one deployment, not one announcement.
That is worth saying out loud next to a score of 65. The verdict above is about what the work exposes — what current AI could do to these tasks. It is not a claim that anyone has done it. For this occupation those two things have come apart completely: the capability argument is on this page, and the evidence column is empty.
Has AI actually changed your work? One tap, anonymous, and the running tally is public. Nothing else is asked of you.
Rather than check back: get the digest and we'll tell you what changed — or watch a single occupation from its own page.