Discover Wokesworth
Molly Grimshaw — Third-generation quarry detonator, Puddle Duck Quarry

Puddle Duck Quarry — Est. Community Detonation Programme

BLAST YOUR
OWN QUARRY

with Molly Grimshaw

PhD Chemistry · 3rd Dan Shotokan Karate · 3rd Generation Quarry Family

£600

per participant

SOLD OUT

through Nov 2029

1st Sat

of every month

The Experience

Blast Your Own Quarry is exactly what it says. You turn up at Puddle Duck Quarry on the first Saturday of the month, you sign a waiver that would make a solicitor weep, and Molly Grimshaw hands you a detonator.

Then you blow up part of a quarry.

There is no metaphor. There is no wellness component. You are not "releasing energy" or "connecting with the landscape." You are detonating explosive charges in a limestone quarry face in Derbyshire. The bang is real. The dust is real. The ringing in your ears is real.

Molly took over from her older brother, "Dusty" Dave Grimshaw, who stepped back from the programme after what the family describe as "personal issues" and what everyone else in Wokesworth describes as "the incident with the caravan." She brought a PhD in Chemistry, a third-degree black belt in Shotokan karate, and an approach to customer service that can best be described as "unapologetic."

The programme has been running for three generations. Bookings are currently filled through November 2029. There is no waiting list because Molly doesn't believe in them. She believes in punctuality, controlled explosions, and not asking stupid questions.

Watch

Promotional footage. Volume warning applies.

Meet Molly

Molly Grimshaw with detonator equipment at Puddle Duck Quarry

3rd Generation — Grimshaw family have been blasting at Puddle Duck since the quarry opened.

PhD, Chemistry — She knows exactly what she's doing. Which somehow makes it worse.

3rd Dan, Shotokan Karate — Relevant only insofar as nobody argues with her.

Polly Grimshaw — Molly's identical twin. Quarry family historian. Documents every blast. Has not missed one since 1978.

"Dusty" Dave Grimshaw ran the programme before stepping back. The family say it was personal. Wokesworth says it was the caravan. Either way, his little sister's in charge now, and nobody's complaining. Not twice, anyway.

As Seen In

The national press have taken notice. Molly has not taken notice of the national press.

Vogue Business — Detonating the Glass Ceiling: Molly Grimshaw on blowing up the rules of British business

Vogue Business

Detonating the Glass Ceiling

September 2024

Forbes Women — The Woman Who Blows Up Industries: Molly Grimshaw, Third-Generation Quarry Detonator Turned Entrepreneur

Forbes Women

The Woman Who Blows Up Industries

October 2024

Entrepreneur — She Blows Things Up For A Living: Molly Grimshaw, Puddle Duck Quarry

Entrepreneur

She Blows Things Up For A Living

2024

Survivors

Verified participants. Not all injuries were physical.

"Best six hundred quid I've ever spent. And I once bought a caravan."

Dave, Matlock

"I thought it was going to be a guided tour. I was handed a plunger."

Helen, Ashbourne

"My ears haven't stopped ringing. Absolutely brilliant."

Keith, Cromford

"Molly told me to stop crying. In hindsight, fair enough."

Jonathan, Belper

"The waiver form was fourteen pages long. That should tell you everything."

Susan, Bonsall

"I asked if there was a vegetarian option. Molly just stared at me."

Tarquin, Wokesworth

Official Merch

Available at Puddle Duck Quarry on blast days, or from Molly's van. No online shop. No returns. The t-shirt fits or it doesn't.

Blast Your Own Quarry t-shirt — Puddle Duck Quarry Est. Community Detonation Programme

The Original

£35

Classic explosion graphic. "Est. Community Detonation Programme." Plunger detail on front.

Molly Grimshaw Blast Your Own Quarry World Tour 2024 t-shirt

World Tour 2024

£35

Molly with detonator. Orange blast halo. Skull and crossbones. "First Saturday of Every Month."

Molly Grimshaw Blast Your Own Quarry World Tour 2024 t-shirt variant

World Tour 2024 (Variant)

£35

Larger portrait. Same energy. Puddle Duck Quarry — First Saturday of Every Month.

World Tour 2025

The "World Tour" is Puddle Duck Quarry every month. The name is Molly's idea of a joke. All dates are sold out. All dates are always sold out.

Jan 4, 2025SOLD OUT
Feb 1, 2025SOLD OUT
Mar 1, 2025SOLD OUT
Apr 5, 2025SOLD OUT
May 3, 2025SOLD OUT
Jun 7, 2025SOLD OUT
Jul 5, 2025SOLD OUT
Aug 2, 2025SOLD OUT
Sep 6, 2025SOLD OUT
Oct 4, 2025SOLD OUT
Nov 1, 2025SOLD OUT
Dec 6, 2025SOLD OUT

2026–2029 dates are also sold out. Molly does not operate a cancellation list. "If someone cancels, I keep the money and blast it myself."

Practical Information

Location

Puddle Duck Quarry, off Dale Lane, Wokesworth

You'll hear it before you see it.

When

First Saturday of every month

09:00 sharp. Molly doesn't wait.

Cost

£600 per participant

Cash or bank transfer. No card. No PayPal. No haggling.

Requirements

Over 18. Steel-capped boots. Signed waiver.

Hard hats provided. Counselling is not.

Blast Your Own Quarry is loud, unapologetic, and not for everyone. It is also sold out until 2029.

Puddle Duck Quarry, Wokesworth. Since always.