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+# Milestone Models
+
+- **AD-SE-08-61, Coupled Multiphysics Driver Implementation** --- This milestone
+  used the singlerod short/long problems. Generating the model was done with the
+  script `tests/singlerod/make_openmc_model.py` from the ENRICO repository
+  (there is a `--short` command line option to generate the short version)
+
+- **AD-SE-08-66, Coupled Assembly Analysis** --- This milestone used the
+  assembly short and long (v2) problems. Generating the model was done with
+  `smr/build-assembly-long.py -a 100 --clone` on the ecp-benchmarks repository
+  (git commit `631fefe`, after pull request #14). In these models, materials are
+  fully differentiated across each fuel ring/axial segment.
+
+- **AD-SE-08-73, Full core coupled-physics simulation** --- This milestone used
+  the core-short and core-long (90 layer) models. Generating the models was done
+  with `smr/build-core-short.py` and `smr/build-assembly-long.py -a 90` on the
+  ecp-benchmarks repository (git commit `c7b89db`, after pull request #16). In
+  these models, materials are not differentiated and no grid spacers are
+  present. The lattice pitch is modified to be exactly 17 times the pin pitch
+  (slightly different than NuScale specification).