A logging roadcut 4 kilometres east of the John Hart Highway (Highway 97), 5 kilometres northeast of Angusmac exposes thinly bedded, fossiliferous, black limestone that strikes north and dips nearly vertical. The exposure lies near the southwestern edge of a 1.5 kilometre wide band of Upper Ordovician to Middle Silurian Sandpile Group limestone with minor dolomite and quartzite that trends northwest for at least 40 kilometres. A 45.7 metre long chip sample along the roadcut contained 50.52% CaO, 3.05% MgO, 2.53% insolubles, 0.76% R2O3, 0.14% Fe2O3, nil MnO, 0.01% P2O5, 0.005% sulphur and 43.04% ignition loss (Annual Report 1965, p. 266 - Sample 2).