: Slate Development

National Slate Museum Slate Quarrymen swap Industrial workshops for Castle splendour!  

For the first time in history slate quarrymen are working at Penrhyn Castle – the home of one of the wealthiest Slate Quarry owners in North Wales.  

Our demonstrating Slate Quarrymen, who usually hold demonstrations at the Museum in Llanberis, are instead demonstrating their skills and craftsmanship at the Castle.  

This astounding turning point comes as we are temporarily close to the public for redevelopment but we didn't want to stop telling our story so decided to take our story to other locations important to the story of slate and which are part of the World Heritage designation for the Slate Landscape of Northwest Wales.  

Penrhyn Slate Quarry established by the Pennant family, dominated the Welsh slate industry for almost 150 years and was notorious for its harsh working conditions. In 1900, over 2000 workers went on strike for better wages and working conditions - a culmination of several years of dissatisfaction and unrest. 

Known locally as the Penrhyn Lockout, the strike lasted for over three years and was one of the longest and most bitter industrial disputes in British history. It caused incredible hardship for the Quarrymen and their families and ripped apart a community, dividing it into strike ‘faithful’s’ who remained on strike or left to find other work elsewhere, and ‘bradwrs’ (traitors) who returned to work. 

Many in the local community still regard the Castle as a symbol of wealth and oppression. Historically, Quarrymen would not have crossed the threshold to the Castle and many of their families have struggled to do so since then. 

Now managed by National Trust Cymru, Penrhyn Castle and Garden have been working with artists and the local community for over a decade to share more about this history and re-engage with its local community as Ceri Williams, General Manager at Penrhyn Castle explained: 

“Over the last decade and more we’ve been working to re-address the way we share our industrial and colonial connections at Penrhyn Castle. Each year, we've achieved new milestones, but welcoming the Quarrymen into the castle marks a significant leap forward in reconnecting the community with this historic site. 

Already, crowds have been gathering to catch a glimpse of the live slate-splitting demonstration that not only celebrates local craftmanship but provides authentic experiences that resonates with the castle’s industrial history. As we continue to work with the National Slate Museum over coming months, we look forward to combining our offers and providing visitors with a unique and memorable visit to Penrhyn Castle.”

For us, the opportunity to have our Quarrymen demonstrating at Penrhyn Castle is a key feature of our redevelopment programme - in particular our Museum on the Move campaign in 2025 as Elen Roberts, Head of the National Slate Museum explained: 

“We’re very grateful to the team at Penrhyn Castle and to National Trust Cymru, for giving us this unique opportunity to work with them as part of our redevelopment programme for the National Slate Museum.  We’ve worked closely with the Trust over the years to share the story of slate and this opportunity to share our Quarrymen’s skills and stories is an enormous thing from both sides. Relocating here – and to other sites around the World Heritage designation during our Museum’s redevelopment - will allow us to engage with new audiences and ensure our story continues beyond the walls of the museum. 

Our staff will benefit from continuing to interact with the public which will enhance their knowledge of the slate story, and hopefully visitors will benefit from encountering Museum staff in new locations – which, alongside the National Trust’s existing offer to visitors at Penrhyn Castle, will offer a fresh perspective on the story of slate”

Both attractions are key parts of the World Heritage Site for the Slate Landscape of North West Wales. Lord Dafydd Wigley, Chair of the Llechi Cymru Partnership welcomed the development:

“Cyngor Gwynedd and its partners have worked together over many years to develop a strong partnership to deliver the Slate Landscape of Northwest Wales World Heritage nomination and subsequent inscription. The results of this strong and active partnership is now bearing fruit as we not only see significant investment of over £30m through the Llewyrch o’r Llechi programme of activities - such as those at Amgueddfa Lechi Cymru and others across the Slate Landscape; but we are also seeing new and innovative ways of working together to reach new audiences, provide new experiences and to share our monumental and global story of how north Wales roofed the world.”

The Quarrymen are at Penrhyn Castle on a daily basis during 2025.                                         

For more information about the history of Penrhyn Castle visit www.nationaltrust.org.uk/penrhyn-castle-and-garden

Hi Helen, tell us a bit about yourself and your role at Amgueddfa Cymru.

I’ve been with Amgueddfa Cymru for a whirlwind 12 months. I am on secondment from Conwy County Borough Council where I usually look after the museum, library, arts, and archives services. Before moving to North Wales 14 years ago I worked across the Scottish islands as an archaeologist and community development worker.

My mum is from North Wales, and I always wanted to learn Welsh. It has taken me 14 years to get there, but I would say that a year at Llanberis has certainly supercharged my learning experience!

My role as Project Director means that I’m responsible for the overall management and delivery of the National Slate Museum Redevelopment project. I lead a number of wider project teams and report on progress to the Project Board. I’m charged with ensuring that the project stays on schedule and within budget and that we are meeting the expectations of our funders and stakeholders. Its also my job to make sure that we all share and drive forward the same vision to deliver the project together with our communities in a way that meets their own needs and aspirations.

The Llanberis project is really exciting, what can you share about it, as it progresses?

We refer to it as a once-in-a-generation opportunity and that really is true. Since the Slate Landscapes of Northwest Wales were designated as a World Heritage Site back in 2021, strategic funding opportunities have made it possible for us develop a really ambitious scheme. We will be able to create a brand new shop, café and learning space to transform the visitor experience. We are also going to install a lift to the first floor pattern lofts for the first time, as well as provide more accessible spaces throughout and better toilets (including a changing places toilet).

We are trying to create a nuanced balance between respecting the sensitivity of Gilfach Ddu and providing a contemporary experience. Visitors, locals and staff alike tell us that they love the site just the way it is – as though the workers have just downed tools and gone home for the day. That’s the spirit of the historic workshops that we are trying to honour, whilst at the same time making more significant improvements to spaces that have historically seen a lot of change already. For example, in our new gallery spaces, we will be able to show off more of our national collection, but also develop our role as a gateway to the wider slate landscape WHS.

We have just finalised our RIBA4 stage, which is the technical design phase where all the detailed specifications and materials are agreed. We have gone out to tender for the main works and with all being well are starting on site in April.

What’s happened to the collection while the renovation works are happening and can we still visit?

Almost the entire collection – around 10,000 objects - have been moved off site to a new dedicated accessible collections centre at Llandygai just outside Bangor. Anything that can move, has moved! This is to protect the collection but also to keep it accessible while the museum is closed temporarily. Our activity programme over the coming year will provide lots of opportunities for people to visit, experience and work with the collections in their temporary home and help select objects for display and decide how their stories will be told.

Is the Llanberis site open while works happen, it would be cool to have a tour of the empty museum!

The museum is closed temporarily, partly to keep staff and visitors safe because of the scale of the works, but also because we are working to a very tight timescale! We are offering some ‘Silent Spaces’ tours at the moment for the local community as we prepare to hand over to the contractor, and we will look to offer more sneak peak and behind the scenes tours over the coming months.

We’ve seen the Development and Llanberis Redevelopment Team working hard to secure funding, whose contributed to the project that we can shout about!

Goodness me, there are so many people doing extraordinary work. Certainly in the last 6 months I have been bowled over by Cadi, our curator, and the wider site staff for the work they’ve done to prepare the museum for closure. Kerry Vicker is my hero. She got me through our Stage 2 National Lottery Heritage Fund bid for just under £10m.

What sustainability measures are being considered, to protect the future of the museum and the collection?

We have Victoria Hillman working on the project team as part of the redevelopment so that we can keep a focused eye on sustainability and environment. There are so many elements to this which are a combination of preventative measures and new initiatives.

In terms of the collection we are being pragmatic and responsive to the types of industrial collections we have. We are conserving some elements – such as Una the engine – who will be brought back into steam through the project. The environments we achieve for the main gallery spaces will achieve a new level of conditioning, which will help us to display more sensitive objects for the first time.

We have also been working with Cardiff Met university on a climate adaptation pathway exercise and building this into the specification for things like landscaping materials, managing run-off, breathability of buildings and design of rainwater goods. We are also looking to achieve:

• BREEAM excellent for the new buildings
• New bat and swift boxes
• Translocation of lichens and mosses
• Planting of native and rare species
• Rainwater harvesting
• Highly sensitive lighting strategy
• Sustainability and environmental learning outcomes embedded across all interpretation

The list goes on!

What are you most looking forward to about the redevelopment?

I can’t wait to see my two young children playing in the spaces we create. I’m hoping to see nothing but delight and wonder on their faces as they explore.

Finally, we love asking this - what’s your favourite piece in the Amgueddfa Cymru collection?

Well, I haven’t been here very long, but I would say my favourite object so far is our beautiful Caban Eisteddfod Chair in the NSM collection. What a simple, beautiful expression of life in the slate quarrying communities and the lived experience of those who sat together in the Caban.

We're busy getting ready for the redevelopment project at the National Slate Museum, which is due to start November 2024! We want to give volunteers the opportunity to be a part of this phase of the project by helping us clean, catalogue and pack our collection in the Pattern Loft. 

To ensure our wonderful industrial collection is protected whilst essential conservation and renovation work is done on the Gilfach Ddu, the collection will be moving. Or at least some of it! Our Collections & Cataloguing Assistants, Osian and Mathew, have been busy labelling and cataloguing items of the collection that haven't before been looked at in such detail. They will be cleaning them, and packing them safely in crates with tissue paper. 

This is a unique opportunity to welcome volunteers and involve them in new ways. We want to make the most of this opportunity to provide experiences, skills development and help improve people's wellbeing through volunteering. 

Sound interesting? Want to Take Part? Take a look at the full Collection Volunteer role description on the website.  You will be able to volunteer on Tuesdays or Thursdays, 10:00-1:00. We can be flexible to suit public transport. This project will run from 24 September to 31 October, but further collections volunteering opportunities will become available in the new year. Any questions? Get in touch with Chloe Ward, Volunteering & Engagement Coordinator on chloe.ward@museumwales.ac.uk. 

What are the volunteering opportunities at the National Slate Museum? 

Getting people involved in volunteering at the National Slate Museum has been a priority since I began my role as Volunteering Co-ordinator here in May 2022. So what opportunities for taking part are there at the Museum?

Blacksmithing placement 
In December 2022 we excitingly welcomed Dai to the museum on a Student Work Placement. Dai was on a Welding and Fabricating college course, which requires students to partake in 20 days of work experience. He worked with Liam, our Blacksmith, in the historic forge in the Gilfach Ddu workshops and over the 20 days learnt how to make a bottle opener, a fire poker, and a pair of tongs. It was great to see his confidence and skills develop over the months he was here!

Skills Development Placements 
Last year we started Skills Development Placements in Llanberis, something that already exists at Cardiff National Museum. They are one day a week of shadowing the front of house team, providing invaluable experience for people who have barriers to work. We piloted the placement over the Winter 2022, and this year Aaron has just started a placement with us. He says he is looking forward to learning about the history and the opportunity to be part of a team. These placements are available almost all year round – please feel free to get in touch for more information.

Rag rug volunteers 
If crafting is your thing, helping us create rugs might be your motivation to volunteer! We have around 3 volunteers weekly in the Chief Engineer’s House, working on making rag rugs for our historic houses. Since they started in May they have had many interesting conversations with our visitors. Many of our visitors talk about how they used to make rag rugs with their grandparents when they were younger, albeit not everyone knows them as rag rugs! They are known by different names across the United Kingdom – we have learnt about 'proddy rugs', 'peg rugs' and many more!

What can we look forward to?  
We’re currently developing a few interesting roles in Llanberis... we will soon be recruiting for an Ambassador Volunteering Role, and a Machine Conservation Volunteering role! We will also be advertising a Heritage Student Work Placement in September for students looking for general experience in the heritage industry. Keep your eyes peeled!

Our curator Cadi Iolen is responsible for the care and conservation of thousands of objects. Here she tells us more about her favourite object in the collection, the 1861 Tanygrisiau house.