The original page grouped concerns about blasting and splitting under four civil risk themes. This revision records those themes as allegations that require project evidence, not as universal outcomes. It contains no operational method information and does not promote an alternative.
How to read the ledger
Each entry separates what the archive says from what would have to be demonstrated for a real quarry or civil project. A risk category is a prompt for governed review; it is not proof that the consequence occurred, a statement that one method is always unsuitable, or an instruction for performing any method.
Four archived risk categories
Safety risk
The source places safety concerns in its disadvantage list. It provides no incident record, exposure description, legal context, control assessment, or comparison. The bounded conclusion is only that safety was a concern named by the archive and must be evaluated under current law and site governance.
Material loss and scrap
The archive associates the legacy methods with material loss or scrap. No measured recovery, waste definition, stone condition, quarry geometry, method comparison, or cost record is supplied. The claim is therefore retained only as a risk hypothesis for evidence review, never as a fixed yield or cost outcome.
Block regularity and large-slab suitability
The source questions block regularity and suitability for large slabs. It does not define block geometry, acceptable defects, downstream slab requirements, natural discontinuities, or an inspection method. It cannot support the absolute statement that a method is unable to produce a large slab.
Noise, dust, and environmental impact
Noise, dust, and environmental impact are the final concern group named by the archive. No monitoring method, boundary condition, exposure duration, permit criterion, mitigation record, or baseline is provided. Any present assessment belongs to the applicable environmental and occupational process for the actual site.
Evidence needed before a consequence can be asserted
| Risk theme | Archive contribution | Missing proof |
|---|---|---|
| Safety | A concern category | Defined hazard, exposure, incident or assessment record, legal context, and reviewed controls. |
| Material loss or scrap | A claimed disadvantage | Stone and site conditions, a measurement basis, comparable scope, and traceable results. |
| Block form or slab suitability | A qualitative concern | Geometry, defect criteria, downstream requirements, and inspection evidence. |
| Noise, dust, or environment | An impact category | Monitoring boundary, method, baseline, applicable limits, and dated records. |
Alternative names are not comparative proof
The archive names mechanized combinations involving wire saws, double-blade equipment, and chain saws. Those labels are preserved only to describe the source. There is no current product mapping, test record, site comparison, safety finding, cost study, or outcome evidence that would justify calling any combination a replacement, a superior method, or a Huada recommendation. The former eliminated-method claim is omitted.
