Rocky Mountain Construction #4425171

56

members (measured 13 Oct 2026, 01:32 UTC)

15 September 2018

created (per Roblox API)

10 August 2026

first measured by this register

OtherENroller coastersamusement park designengineering

Description

Rocky Mountain Construction (also abbreviated as RMC) is a manufacturing and construction company based in Hayden, Idaho, United States. The company is best known for its I-Box track and Topper Track for wooden roller coasters.

Written by the group; not a statement by this register.

Membership history

Growth

2 measurements spanning 34 days, net -1. Dots are measurements; the straight line between them is drawn to join them, not to claim we know the path taken in between — snapshots are recorded only when a count changes, so gaps mean “no change observed”, never “interpolated”. The vertical axis spans 56–57 and does not start at zero.

Measurement log — every members count we have recorded
Measured (UTC)	Members	Change
15 Sept 2026, 06:44	56	-1
11 Aug 2026, 19:55	57	first reading

Ownership

Owned by @LhotseModel as measured.

Groups seen changing owner — the largest ever handed over and the most recent — are on the ownership transfers board.

Members we’ve seen

@LhotseModel — C.E.O. (rank 255) terminated

Tofifee (@tofifee) — Engineers (rank 254)

@Trippen_Finnese — Installation/Site Construction (rank 9) terminated

SwitchDownHisGrandma (@OtocoIobus) — Fan (rank 8)

@redwolfwind — Fan (rank 8)

MackRidesGmbH (@harryjtaylor26) — Fan (rank 8)

Ike (@Ike_playzrealwow) — Fan (rank 8)

@xMuncy — Fan (rank 8)

sanitydevolved (@Pringelsaregood123) — Fan (rank 8) terminated

Hayden (@hhaydem) — Fan (rank 8)

CubeMan (@r0bl0xp1ayr) — Fan (rank 8)

A sample — only members this register has independently measured, highest rank first. Not the full roster.

Rank structure

C.E.O. 1

Engineers1

Manufacturing0

Installation/Site Construction3

Fan52

Member57

Guest0

Roles and per-rank member counts as Roblox reports them (rank 0 = guest … 255 = owner).

Related groups

Groups whose measured members overlap with this one — a sample from our membership graph.

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Pilot Training Club#2794513 · 6 shared members

The Coaster Team#232342 · 6 shared members

Chillz Studios#2782840 · 5 shared members

ROLVe#2613928 · 4 shared members

Police Roleplay Community#4328109 · 4 shared members

Quantum Science Inc.#2847031 · 4 shared members

Universal Roblox Park & Resort#1181615 · 4 shared members

Bee Swarm Simulator Club#3982592 · 3 shared members

Car Crushers Community#2726951 · 3 shared members

Pinewood Builders#159511 · 3 shared members

Open data

Download this group’s measured record — free to reuse with attribution: membership history (CSV) · full record (JSON)

Each file carries its licence and retrieval time inside it, and is generated from the same measurements shown above.