Despite the Covid-19 pandemic that crippled work on so many projects worldwide, restoration work at the Van Wyck-Lefferts tidal gristmill in Huntington, N.Y., has made impressive progress during 2021.

In a November 1 letter to friends and supporters of the project, Richard Hamburger, president of the Van Wyck-Lefferts Tide Mill Sanctuary, describes the accomplishments for the year. These include completion of extensive dam repairs and the replacement or repair of damaged building components, including the roof. (During this work, some old wooden gears were found to be still operable!)

The work was funded by grants from The Nature Conservancy and the Robert David Lion Gardiner Foundation along with individual donations.

The president’s report indicates that much more remains to be done. The organization has goals to repair a bulkhead protecting the mill, implement a plan for vegetation on the dam surface that will withstand salt water, and develop a program to share this site’s remarkable history and technology with the public.

Continue reading “Long Island (NY) Tide Mill Restoration: Amazing Progress in 2021” →

Register today for the annual tide mill conference on Saturday, October 16, at 10 a.m. Eastern Daylight Time (14:00 UTC).

This year it’s a hybrid: attend in person at the University of Southern Maine in Portland from 10 am to 2 pm, or join on line via Zoom for the presentations from 10 am to 12 pm.

This year’s presentations offer unusual variety. They’ll cover tide mill sites in Maine and Cape Cod and describe how tide power influenced the course of history in New York and Portugal. Participants will also hear the latest news about modern tidal energy technology.

In addition, the conference features the first public preview of the Tide Mill Institute’s new online tide mill database. It currently holds data and images for U.S. tide mill sites from Maine to Virginia, and it could eventually be expanded to worldwide coverage.

The first 20 to register for the in-person program will tour the Osher Map Library on the USM campus from 1 to 2 pm, so register as soon as possible to reserve your space. Note that the Osher collection now includes insurance drawings from the American Textile History Museum.

Presentations start at 10:00 EDT (14:00 UTC) and end at 12 (16:00 UTC). After a brief Tide Mill Institute business meeting and a lunch break, twenty in-person participants will tour the Osher Map Library accompanied by archivist Jane Ward.

More information and registration instructions

State and local Covid protocols require masks for in-person conference participants.

Digest of tidal energy development news from April 20 to August 9, 2021

by David Hoyle

USA

The output of Verdant Power’s Roosevelt Island (New York City) tidal power array was measured over a period of 39 days by the European Marine Energy Centre (EMEC). The array generated 187 kW at peak flood tide velocity. This is the first time EMEC has done an assessment outside of their Orkney, Scotland facility. A world’s first for EMEC and Verdant Power – International Water Power.

95% of the potential for tidal power generation in the US exists in Alaska according to the National Renewable Energy Laboratory (NREL). The first article, below, describes NREL’s efforts to identify locations with the highest potential in the Cook Inlet. NREL’s chart on the technical power potential of US marine resources, included in the article, is worth a look. Cook Inlet tidal energy potential tops in the nation.

Maine’s Ocean Renewable Power Company (ORPC) has submitted a permit application for a proposed 5 MW tidal power pilot project to be located in the Cook Inlet. Ocean Energy – ORPC Plans to Advance Tidal Energy In Cook Inlet.

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Continue reading “Tidal Energy News” →

Tide mills were built for a variety of purposes, but probably their most common and best known use was grinding grain into flour: the grist mill. The heart of a grist mill, whether powered by tides, freshwater streams, wind or animal power, is its millstones. These disk-shaped, grooved stones are familiar to mill enthusiasts worldwide.

But how did people convert grain into flour before these stones and the methods for powering them became available? Mills Archive, an organization near London (U.K.) dedicated to preservation of mill history, recently sent out a reminder about an article on their website describing manual tools used for grinding grain since prehistoric times. And some of these tools, such as saddle querns, are still grinding grain in some parts of the world today.

Read “The First Milling Stones” on the Mills Archive website.

Note: This article is just one of an excellent series on the Mills Archive website and well worth exploring: “From Quern to Computer: The History of Flour Milling.”

By Tim Richards

In 1844 a better [tide mill] was erected upon the site….

from History of Plymouth County, Massachusetts.
Compiled by Simeon D. Hamilton Hurd, 1884.

Development of the Truro Tide Mill before 1790 created a high-value business for the town and owners. Fifty years later, Truro was booming. Driven by increased cod and mackerel catches, the town’s population leapt from 1,547 in 1830 to 2,051 by 1850. More mouths to feed meant more demand for flour. It was not assured, however, that the aging tide mill could retain its share of that business.

In 1840, Truro supported the tide mill and three windmills. Recently-built windmills incorporated longer, more efficient blades, increasing their grinding capacity over a wider range of wind conditions. This competition may have pressured the tide mill proprietors to increase their mill’s horsepower and operating hours.

At the same time, important Truro Tide Mill proprietors likely faced a separate financial challenge. In April 1841 Anthony Snow Collins mortgaged his home and other property to the newly-established Truro Fire and Marine Insurance Company for $250. At least seven other tide mill owners mortgaged their houses with the same company at this time. These mortgages appear to have represented their investment in the company.

Continue reading “A Better Mill for Truro” →

Long-time Tide Mill Institute supporter John Morse commissioned videographer and drone pilot Troy Watson to take drone video of four tide mill sites in and around Phippsburg, Maine, on the Kennebec River just south of Bath. The result is clear and spectacular views of these sites – available online to anyone. Click the links below to view these videos on YouTube.

As these ruins continue to degrade with age, the videos will become more and more valuable as part of the historic record. Tide Mill Institute is grateful to John for making them available.