diff --git a/.github/workflows/rfc0024-deep-run.yml b/.github/workflows/rfc0024-deep-run.yml
index 714175cf..eb1b7d41 100644
--- a/.github/workflows/rfc0024-deep-run.yml
+++ b/.github/workflows/rfc0024-deep-run.yml
@@ -38,7 +38,7 @@ jobs:
           PROPTEST_CASES: "512"
         run: |
           cargo test -p ourios-testgen --release
-          cargo test -p ourios-miner   --release --test rfc0024_properties
+          cargo test -p ourios-miner   --release --test it rfc0024_properties
           cargo test -p ourios-parquet --release --test it rfc0024_properties
           cargo test -p ourios-querier --release --test it rfc0024_properties
           cargo test -p ourios-bench   --release --test rfc0024_calibration
diff --git a/crates/ourios-miner/tests/README.md b/crates/ourios-miner/tests/README.md
new file mode 100644
index 00000000..4a6c9a6c
--- /dev/null
+++ b/crates/ourios-miner/tests/README.md
@@ -0,0 +1,18 @@
+# Integration-test layout (RFC 0028 slice 2)
+
+`it/` is the consolidated harness — one compiled binary for this crate's
+integration tests (RFC 0028 §3.1; the per-binary link cost dominated
+`cargo test` wall time). New integration tests go in `it/<name>.rs` plus a
+`mod` line in `it/main.rs`, unless they belong on the exempt list below.
+
+## Harness-exempt binaries (RFC0028.2)
+
+Each of these installs the **process-global** OTel meter provider
+(`ourios_telemetry::init_in_memory`) for one telemetry arm. OpenTelemetry
+cannot restore a replaced global, so two installers in one process race
+each other; they stay one-per-binary:
+
+- `invariants.rs` — the §6.5 param-overflow metrics arm.
+- `hazards.rs` — the per-service overflow-rate alert-threshold arm.
+- `rfc0023_bounded_memory.rs` — the template-ceiling/eviction metrics arm.
+- `rfc_internal.rs` — the confidence-gauge quantile arm.
diff --git a/crates/ourios-miner/tests/it/main.rs b/crates/ourios-miner/tests/it/main.rs
new file mode 100644
index 00000000..815ffa95
--- /dev/null
+++ b/crates/ourios-miner/tests/it/main.rs
@@ -0,0 +1,14 @@
+//! The consolidated miner integration-test harness (RFC 0028 slice 2).
+//!
+//! Three binaries fold here (RFC 0028 §1 / epic #382 — per-binary link
+//! cost dominates `cargo test` wall time); files moved verbatim from
+//! `tests/*.rs`, test names gaining only this harness's module-path
+//! prefix (RFC0028.1). Four binaries stay dedicated (RFC0028.2):
+//! `invariants.rs`, `hazards.rs`, `rfc0023_bounded_memory.rs`, and
+//! `rfc_internal.rs` each install the process-global `OTel` meter
+//! provider (`init_in_memory`) for one telemetry arm, and two installers
+//! in one process race — see `tests/README.md`.
+
+mod rfc0004_configuration_policy;
+mod rfc0017_template_created;
+mod rfc0024_properties;
diff --git a/crates/ourios-miner/tests/rfc0004_configuration_policy.rs b/crates/ourios-miner/tests/it/rfc0004_configuration_policy.rs
similarity index 100%
rename from crates/ourios-miner/tests/rfc0004_configuration_policy.rs
rename to crates/ourios-miner/tests/it/rfc0004_configuration_policy.rs
diff --git a/crates/ourios-miner/tests/rfc0017_template_created.rs b/crates/ourios-miner/tests/it/rfc0017_template_created.rs
similarity index 100%
rename from crates/ourios-miner/tests/rfc0017_template_created.rs
rename to crates/ourios-miner/tests/it/rfc0017_template_created.rs
diff --git a/crates/ourios-miner/tests/rfc0024_properties.proptest-regressions b/crates/ourios-miner/tests/it/rfc0024_properties.proptest-regressions
similarity index 100%
rename from crates/ourios-miner/tests/rfc0024_properties.proptest-regressions
rename to crates/ourios-miner/tests/it/rfc0024_properties.proptest-regressions
diff --git a/crates/ourios-miner/tests/rfc0024_properties.rs b/crates/ourios-miner/tests/it/rfc0024_properties.rs
similarity index 100%
rename from crates/ourios-miner/tests/rfc0024_properties.rs
rename to crates/ourios-miner/tests/it/rfc0024_properties.rs