https://arch3llc.com/portfolio daily 0.75 2025-07-18 https://arch3llc.com/portfolio/pillsbury-a-mill-headrace-tunnel-1882 monthly 0.5 2024-12-13 https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/cb58a2c6-a482-4cb3-8981-7e2a1288e57d/Pillsbury-Tunnel-02-landscape.jpg Portfolio - Pillsbury “A” Mill Tunnel - Pillsbury tunnel 02 landscape Pillsbury tunnel 02 landscape (Please credit Daniel R. Pratt and the Historic American Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/7e1da556-faa0-4da0-a3bd-1a6137ed173c/HE-MPC-9995-02.jpg Portfolio - Pillsbury “A” Mill Tunnel - Interior concrete wall of intake structure - MHPR HE-MPC-9995-02 Interior concrete wall of intake structure - MHPR HE-MPC-9995-02 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/9d7a09cb-f12b-4018-a7d1-ae5447309ee1/Pillsbury-Tunnel-01.jpg Portfolio - Pillsbury “A” Mill Tunnel - Pillsbury headrace tunnel inlet structure - MHPR HE-MPC-9995-01 Pillsbury headrace tunnel inlet structure - MHPR HE-MPC-9995-01 (Please credit Daniel R. Pratt and the Historic American Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/d6f73d2d-af8a-4651-8b43-fa8432371f02/HE-MPC-9995-03.jpg Portfolio - Pillsbury “A” Mill Tunnel - Curved masonry tunnel northeast of intake structure - MHPR HE-MPC-9995-03 Curved masonry tunnel northeast of intake structure - MHPR HE-MPC-9995-03 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/3a46e587-46c8-42af-ae51-6f1ac9743607/HE-MPC-9995-05-1.jpg Portfolio - Pillsbury “A” Mill Tunnel - Headrace tunnel looking southeast from intake end - MHPR HE-MPC-9995-05 Headrace tunnel looking southeast from intake end - MHPR HE-MPC-9995-05 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/f0aa3737-70c0-42b3-a865-e8e41a10a19a/HE-MPC-9995-06.jpg Portfolio - Pillsbury “A” Mill Tunnel - Tunnel to Phoenix Mill in headrace wall - MHRP HE-MPC-9995-06 Tunnel to Phoenix Mill in headrace wall - MHRP HE-MPC-9995-06 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/56182254-8df1-425a-8c1e-db9e6a5bf162/HE-MPC-9995-08.jpg Portfolio - Pillsbury “A” Mill Tunnel - Detached iron gate from Phoenix Mill tunnel - MHPR HE-MPC-9995-08 Detached iron gate from Phoenix Mill tunnel - MHPR HE-MPC-9995-08 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/82aa698c-59e3-4378-8f3f-2e91cf73aa9a/HE-MPC-9995-11.jpg Portfolio - Pillsbury “A” Mill Tunnel - Headrace tunnel, looking southeast towards forebay and trash rack - MHPR HE-MPC-9995-11 Headrace tunnel, looking southeast towards forebay and trash rack - MHPR HE-MPC-9995-11 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/b205b9ce-89df-4227-a5c7-139086603476/MN-29-5-A-25.jpg Portfolio - Pillsbury “A” Mill Tunnel - Drill holes in headrace tunnel floor - HABS MN-29-5-A-25 Drill holes in headrace tunnel floor - HABS MN-29-5-A-25 (Please credit Daniel R. Pratt and the Historic American Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/67044be0-4319-4ea5-a68a-e0efe4f2b853/HE-MPC-9995-09.jpg Portfolio - Pillsbury “A” Mill Tunnel - Headrace tunnel, looking northwest from near forebay - MHPR HE-MPC-9995-09 Headrace tunnel, looking northwest from near forebay - MHPR HE-MPC-9995-09 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/29fea2c3-4aa3-42d5-8200-bb8732a39553/HE-MPC-9995-12.jpg Portfolio - Pillsbury “A” Mill Tunnel - Headrace tunnel arch profile near forebay - MHPR HE-MPC-9995-12 Headrace tunnel arch profile near forebay - MHPR HE-MPC-9995-12 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/06f3b1f5-ac88-4240-bd8c-bd18ffd1580a/HE-MPC-9995-13.jpg Portfolio - Pillsbury “A” Mill Tunnel - Manhole access tunnel opposite forbay - MHPR HE-MPC-9995-13 Manhole access tunnel opposite forbay - MHPR HE-MPC-9995-13 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/49dc94fc-8385-4400-94cb-7242d1a994cd/Pillsbury-Tunnel-HE-MPC-9995-14.jpg Portfolio - Pillsbury “A” Mill Tunnel - Cast iron trash rack adjacent to forebay - MHPR HE-MPC-9995-14 Cast iron trash rack adjacent to forebay - MHPR HE-MPC-9995-14 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/c56fb0a7-e633-4ba7-a36a-77a6ea3c10c2/MN-29-5-A-27.jpg Portfolio - Pillsbury “A” Mill Tunnel - Headrace tunnel terminus behind trash rack - HABS MN-29-5-A-27 Headrace tunnel terminus behind trash rack - HABS MN-29-5-A-27 (Please credit Daniel R. Pratt and the Historic American Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/6f75e3fd-119f-4112-a120-39866c21d8df/Pillsbury-Tunnel-05.jpg Portfolio - Pillsbury “A” Mill Tunnel - Forebay arch at headrace tunnel terminus - MHRP HE-MPC-9995-16 Forebay arch at headrace tunnel terminus - MHRP HE-MPC-9995-16 (Please credit Daniel R. Pratt and the Historic American Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/4d5d27e4-d2a0-48a9-ab02-62a7e1c244d8/HE-MPC-9995-17.jpg Portfolio - Pillsbury “A” Mill Tunnel - Detail of brick forebay pillar - MHPR HE-MPC-9995-17 Detail of brick forebay pillar - MHPR HE-MPC-9995-17 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/00228010-7540-484d-b6a9-7f50ad101317/MN-29-5-A-29.jpg Portfolio - Pillsbury “A” Mill Tunnel - Forebay showing upstream (r) and downstream (l) turbine gates - HABS MN-29-5-A-29 Forebay showing upstream (r) and downstream (l) turbine gates - HABS MN-29-5-A-29 (Please credit Daniel R. Pratt and the Historic American Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/4c619c0c-4cdc-46ab-88c1-fac04f99c3db/MN-29-5-A-30.jpg Portfolio - Pillsbury “A” Mill Tunnel - Upstream turbine sluice gates - HABS MN-29-5-A-30 Upstream turbine sluice gates - HABS MN-29-5-A-30 (Please credit Daniel R. Pratt and the Historic Aerican Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/f7396054-078f-4554-8b7a-08669858b486/Pillsbury-Tunnel-06.jpg Portfolio - Pillsbury “A” Mill Tunnel - Downstream turbine sluice gates - MHPR HE-MPC-9995-20 Downstream turbine sluice gates - MHPR HE-MPC-9995-20 (Please credit Daniel R. Pratt and the Historic American Buildings Survey) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/a795ea4b-f2d0-49a3-9463-c697874d866a/HE-MPC-9995-21.jpg Portfolio - Pillsbury “A” Mill Tunnel - Downstream turbine sluice gate control mechanism - MHPR HE-MPC-9995-21 Downstream turbine sluice gate control mechanism - MHPR HE-MPC-9995-21 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/2b9dc138-9ec0-452a-a212-195196b78f69/HE-MPC-9995-23.jpg Portfolio - Pillsbury “A” Mill Tunnel - View from above downstream turbine pit - MHPR HE-MPC-9995-23 View from above downstream turbine pit - MHPR HE-MPC-9995-23 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/a08a209a-a8f3-45a2-b8d7-989b4d5dd483/HE-MPC-9995-22.jpg Portfolio - Pillsbury “A” Mill Tunnel - Detail view from above downstream turbine - MHPR HE-MPC-9995-22 Detail view from above downstream turbine - MHPR HE-MPC-9995-22 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/5fd31a1e-21d9-4087-a78a-f530e90871b7/HE-MPC-9995-24.jpg Portfolio - Pillsbury “A” Mill Tunnel - Upstream (l) and downstream (r) turbine tailrace exits below A Mill - MHPR HE-MPC-9995-24 Upstream (l) and downstream (r) turbine tailrace exits below A Mill - MHPR HE-MPC-9995-24 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/d3a6c4b5-ce45-49ee-a613-e1d75d0b6346/HE-MPC-9995-260.jpg Portfolio - Pillsbury “A” Mill Tunnel - Upstream turbine tailrace exit at Mississippi River level - MHPR HE-MPC-9995-26 Upstream turbine tailrace exit at Mississippi River level - MHPR HE-MPC-9995-26 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/de73fa2a-1f60-4e16-80fa-e9a987f0ddd9/Pillsbury-Tunnel-HE-MPC-9995-27.jpg Portfolio - Pillsbury “A” Mill Tunnel - Downstream turbine tailrace exit at Mississippi River level - MHPR HE-MPC-9995-27 Downstream turbine tailrace exit at Mississippi River level - MHPR HE-MPC-9995-27 (Please credit Daniel R. Pratt and the Minnesota Historic Property Record) https://images.squarespace-cdn.com/content/v1/66e9811d0b468840d25c8b76/2d4ef419-ef5c-4ebb-8763-cab850a56c88/Pillsbury-Tunnel-08.jpg Portfolio - Pillsbury “A” Mill Tunnel - Turner columns in adjacent Pillsbury "C" Mill Turner columns in adjacent Pillsbury "C" Mill (Please credit Daniel R. 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