Update: Conservation at the MMO

Jascin N. Leonardo Finger • Jul 18, 2022

Conservation of historic buildings is a slow process. Much of it comes from trying to match the original materials so that we can make sure the conservation work is done properly, that it matches in color, and that it works with what exists. For example, painting latex paint over a lime-based paint: not a good idea. It is not historically accurate but also that latex is not going to adhere to the lime wash properly and at some point, you will have a mess that you are re-doing the right way.


In the case of the Maria Mitchell Vestal Street Observatory, the grout (cement) is very coarse. It’s full of small pebbles and broken pieces of stone (see image). The main dome was built in 1908 and the addition to the right of it was completed in 1922. When I joke that it looks like they went to the beach to make the grout mixture, I am not entirely sure it is a joke!


In any case, this is not something – the lime or this particular grout – that you buy off the shelf. The mason has to make it – match the color, the texture/coarseness, the pebble-like material and colors in it, the mixture. Thus, the amazing island mason, Wayne Morris – who has been working on this project and also did our conservation work at the MMA Research Center – has spent countless hours collecting stones and digging through stones he has in his masonry yard. Once he has a good amount and ones that match what is on the MMO, he pulverizes them to match the size of the pieces found in the existing grout on the building. He actually created a special tool to do this. Because, that’s how he works.



So, now that he has a good supply, he has been focused on the back side of the building dealing with the cracks and places that the grout has spalled and fallen out. He is now attending to the front of the building, thus more staging. Once those areas are dealt with, he will replace the iron lintels above the windows. These have rusted because of water getting in. They will be replaced with steel that will not rust, expand, and then cause cracking. He will also be addressing the “parapets” – rebuilding them where needed – and attending to the copper and the flat room on top of the 1922 addition.


JNLF

 


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Shards

By Jascin N. Leonardo FInger • 06 May, 2024
I have written of my love for sea glass and pottery shards in the past and the recent replacement of the sewer and water lines on Vestal Street created a small shard collection over the last month. Since the work required the asphalt to be completely removed (all twelve inches of it!) and the road to be dug up multiple times as they worked to remove pipe, relay new pipe, hook up the water meters, and install drainage and manhole covers, this resulted in the earth in the street being tossed about quite a bit. And, with that, came the shards! Some of these likely came from the sewer line (yes, yuck) but others came from being simply in the dirt of the road – which was not paved until 1946/1948. Pieces were likely tossed out at times, made to act as filler in holes, or simply tossed. So I found all sorts of pieces I will keep here at the Mitchell House. They included: a lovely piece with a red floral, many pieces of plates, glass, the top of a late nineteenth or early twentieth century (medicine) bottle, glass shards, a flattened spoon, a brass knob (found by a neighbor) some nails, a spike, pieces of a larger container or two based on the size and curve and coloring of the shards, and possibly a Wampanoag stone tool. One person’s trash is another one’s treasures! JNLF

Is That A Wrap?

22 Apr, 2024
Yes. Well, almost. After about a month of working – and some living (staff and or neighbors) – on Vestal Street with all the sewer and water replacement work, the paving happened today (April 17, 2024). This is the first “layer” – a three-inch binder coat. In the fall, once time has passed, they will return for the final one inch of the finish layer. Some of the other things along Vestal Street will also be repaired and updated between now and the final coat – and a bit after that. But we are very happy, after all these years to have a modern system of piping – and all new drainage we never had before! While the curator in me loved the old clay pipes, they were riddled with roots from the trees, holes, and in some places, collapsed, and the twelve inches of asphalt had to go. Vestal Street was only paved in about 1946/1948 – and has not been paved in maybe twenty years so that is a lot of asphalt in about fifty years! And with climate change and the increase in how much rain we get in these heavy rain events, all that water rushed down Vestal Street with nowhere to go – except our cellars. I am sure the neighbors are happy too! A thank you to the Town of Nantucket’s Sewer Department, especially David Gray (who may regret giving me his cellphone number forever), N&M Excavating and Utilities (Dean, we appreciate you being so nice when we had too many questions), Victor-Brandon Corp for paving, and numerous others. We are looking forward to great flushing, powerful hose lines, and rainwater being whisked away via the new, never-before-had storm drains! JNLF And to all the N&M workers who wondered why I was constantly looking down as I walked along Vestal Street, you should see the trove of porcelain shards, glass, old nails, a bottle neck, 19 th century spoon, and even possibly a Wampanoag stone tool I found!
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