H&S Knowledge Library
Start anywhere. The library is much larger than one page.
A remembered job, workplace, task, product name, piece of equipment, company or approximate year can each be a useful starting point. This library connects workplaces, occupations, tasks, products and sources so you can explore related information in one place.
Use what you remember. You do not need a product label or complete work history. Start with the fragment that is easiest to recall, then follow the connections that help recover place, time, task, equipment and source.
Eight ways into the research
PlaceCity, region, plant, shipyard or building.WorkEmployer, facility or worksite.TaskRepairing, cutting, scraping, cleaning or maintaining.ObjectBoiler, pump, valve, insulation, gasket or other remembered object.CompanyManufacturer, supplier, trust or historical company name.ProductSearch source-verified historical product names.SourceGo directly to the public record behind a connection.FragmentsCombine partial memories when no single detail is enough.
Occupations
Occupations 19
Start with a trade, job title or work role.
BoilermakersExplore →Building maintenance & facilities workersExplore →CarpentersExplore →ElectriciansExplore →HVAC & sheet metal workersExplore →Industrial maintenance workersExplore →InsulatorsExplore →Laborers & demolition workersExplore →MachinistsExplore →MillwrightsExplore →Operating engineers & heavy-equipment operatorsExplore →Painters & finishersExplore →Paper-mill workersExplore →Pipefitters & steamfittersExplore →Power-plant & utility workersExplore →Shipyard & ship-repair workersExplore →Stationary engineers & boiler operatorsExplore →Vehicle & equipment mechanicsExplore →Welders & burnersExplore →
Industries
Industries 8
Use the kind of workplace to narrow the historical context.
Construction & renovationExplore →Industrial manufacturingExplore →Institutional & commercial buildingsExplore →Mining, milling & mineral processingExplore →Paper mills & process plantsExplore →Power generation & utilitiesExplore →Shipbuilding & repairExplore →Transportation & fleet maintenanceExplore →
Tasks
Tasks 24
Often the remembered action is more useful than the forgotten product label.
Accessing, removing or working beside thermal insulationExplore →Boiler & furnace maintenanceExplore →Brake servicingExplore →Clutch servicingExplore →Demolition & tear-outExplore →Drywall, plaster & finishing workExplore →Electrical equipment maintenanceExplore →Equipment opening & disassemblyExplore →Flooring removal & surface preparationExplore →Furnace / refractory repairExplore →Gasket removal & replacementExplore →HVAC / air-handling maintenanceExplore →Machine maintenance & equipment disassemblyExplore →Packing removal & repackingExplore →Pipe cutting, access & mechanical workExplore →Plant shutdown / outage workExplore →Pump repair & overhaulExplore →Renovation & remodelingExplore →Roofing, siding & cement-product workExplore →Steam / condensate leak repairExplore →Sweeping, cleanup & debris handlingExplore →Talc mining & millingExplore →Valve repair & repackingExplore →Welding / hot work near insulated systemsExplore →
Equipment & materials
Equipment & materials 18
Follow the object, system or material a person remembers seeing or working around.
Boilers & furnacesExplore →Brake, clutch & friction systemsExplore →Electrical equipment & heat-resistant componentsExplore →Fireproofing & acoustic materialsExplore →Flooring, mastics & adhesivesExplore →GasketsExplore →HVAC & air-handling systemsExplore →Industrial talc / mineral-fiber contextExplore →Joint compound, plaster & wall/ceiling materialsExplore →Millboard & electrical paperExplore →PackingExplore →Pipe & thermal insulationExplore →PumpsExplore →Refractory cements & furnace materialsExplore →Roofing, siding & cement productsExplore →Steam piping & distribution systemsExplore →Turbines, compressors & rotating machineryExplore →ValvesExplore →
Research depth
Workplaces, companies, products and sources
The deeper layers stay searchable without forcing a visitor to scan hundreds of giant cards.
48Workplace recordsSearch the current New York workplace research corpus.11Manufacturer / trust recordsResolve remembered company names against current official source sets.38Historical product entriesNARCO and Kaiser source-verified product evidence.54DII named product / operation termsSource-specific names from the official DII Product and Operations List.80Source documentsPublic records and source taxonomies underneath Legacy.9Direct workplace/company bridgesPublished only where a source supports the specific relationship.
Source vocabulary
Preserve the language used by the source.
Official source lists do not always use the same vocabulary a visitor would use. Those terms are preserved as a separate searchable reference rather than being combined into modern categories.
DII Product & Operations Index
54 exact named entries organized by source grouping.
DII Occupation / Industry / Entity Taxonomy
21 published industry codes plus links to the official occupation, entity and site lists.
Why This Connection?
See how source vocabulary becomes a research lead without becoming an unsupported conclusion.
Evidence Expansion Engine