What We Do
Areas of Expertise:
- Increase Tonnage
- Improve Plant Availability & Reliability
- Enhance Profitability
- Boost Efficiency
- Increase Safety Performance Through...
- Easy Installation
- Easy Access
- Easy Maintenance
- Tool-Less Operation
- OSHA/MSHA Compliance
- Governmental Fine Avoidance
- Elimination of Confined Workplaces
- Eliminate Spillage
- Prevent Sticking
- Contain Dust
- Reduce Noise
- Provide for Community Conformity
- Lower Energy Consumption
- Increased Wear Life of Screens & Liners
- Reduce Maintenance Time & Money
- Improve Screening Efficiency
Project Snapshots:
previous nextOwner:
CEMEX
Location:
Sunol, California
Project:
Trommel Screen
Scope:
Increase sand production. Design #4 mesh opening window-frame rubber sand screens.
Completion:
Winter 2010
Owner:
Lehigh Southwest Cement
Location:
Redding, California
Project:
Upgrade Chute System
Scope:
Design, engineer, manufacture and supply new storage dome reclaim transfer chute and conveyor canoe system.
Completion:
Winter 2010
Owner:
Newmont Mining
Location:
Battle Mountain, Nevada
Project:
Upgrade 800 TPH Feeders
Scope:
Design, engineer, manufacture and supervise installation of three feeder system upgrades to increase belt and liner wearlife.
Completion:
Spring 2010
Owner:
Lehigh Southwest Cement
Location:
Tehachapi, California
Project:
Replace Roller Mill Belt Feeder System
Scope:
Design, engineer, manufacture and supply new air-tight 250 TPH belt feeder.
Completion:
Fall-Winter 2009
Owner:
Lehigh Southwest Cement
Location:
Tehachapi, California
Project:
Replace Bucket Elevator Chute
Scope:
Design, engineer, manufacture and supply new raw material elevator chute.
Completion:
Winter 2004
Owner:
RMC Pacific Materials
Location:
Davenport, California
Project:
Primary Crusher; Scalping and Screening Station
Scope:
Design, engineer, manufacture and install conversion for 6 x 20 single deck vibrating bar grizzly; new deck frames, moly-rubber grizzly bars and full rubber wear package. Convert both decks of Allis 8 x 24 DD primary screen with new mining duty deck frames, moly-rubber screen panels and full rubber wear package.
Completion:
February 2001
Owner:
TXI, Pacific Custom Materials
Location:
Port Costa, California
Project:
700HP Cage mill discharge chute
Scope:
Design, engineer, manufacture and supervise installation of new dust tight collection chute, with new conveyor impact system and conveyor canoe.
Completion:
November 2000
Owner:
CEMEX (RMC Pacific Materials)
Location:
Davenport, California
Project:
Roller Mill Feed System Upgrade
Scope:
Design, engineer, manufacture, supervise installation & startup of new design non-plugging and airtight feeder to the Triple Gate.
Completion:
February 2000
Owner:
RMC Pacific Materials
Location:
Davenport, California
Project:
Feeder and raw material Air-Lock System (105 feeder)
Scope:
Design, engineer, manufacture and install new raw material air-lock feeder system for 1750 HP Roller mill; inflatable feed hopper, 48" x 24' belt feeder and air tight hood over triple gates.
Completion:
February 2000
Owner:
Graniterock
Location:
Watsonville California
Project:
Sand Stacker
Scope:
Design, engineer and manufacture
36" x 150' radial stacker.
Completion:
April 1999
Owner:
Graniterock
Location:
Watsonville, California
Project:
Primary Scalping Screen Conversion
Scope:
Re-engineer and supply new side frames for 6 x 16 DD scalping screen, complete with new mining duty deck frames and moly-rubber grizzly panels.
Completion:
March 1999
Owner:
RMC Pacific Materials
Location:
Davenport, California
Project:
Triple Gates; (Raymond Roller Mill), Overland Conveyor and high temperature Clinker Handling
Scope:
Design, engineer, manufacture and install new (patent pending) mill feed-gate system for 1750 HP grinding mill, new hi-temperature ceramic lined windboxes in the roller mill and two additional beltline junctions.
Completion:
February 1999
Owner:
Lone Star Northwest
Location:
DuPont, Washington (Seattle-Tacoma)
Project:
Coarse Material and Crusher Dust Surge Pile Reclaim Feeder Hoppers
Scope:
Design, engineer and manufacture non-plugging inflatable moly-rubber hoppers, fitted over the tunnels. Hoppers measuring 6' x 8' with 5" thick inflatable liners. Included four-station PLC air controllers.
Completion:
December 1998 (-7" feed pile)
March 1999 (-#4 mesh crusher dust pile)
Owner:
Kaiser Sand & Gravel
Location:
Cupertino, California
Project:
Primary Screens bypass chute
Scope:
Design, engineer and manufacture inflatable moly-rubber lining system, complete with programmable air controller.
Completion:
November 1998
Owner:
Lakeside Industries
Location:
Issaquah, Washington
Project:
Screen undersize chutes
Scope:
Design, engineer, manufacture and supervise installation of inflatable moly-rubber liners.
Completion:
Two systems; September 1998 and June 1999
Owner:
Lone Star Northwest
Location:
DuPont, Washington (Seattle-Tacoma)
Project:
2,500 TPH crushing plant; finish screens undersize chutes
Scope:
Design, engineer, manufacture and supervise installation of four inflatable moly-rubber liner systems under the 8 x 20 sand screens, with programmable inflatable controls.
Completion:
September 1998 (1st system)
October 1998 (remaining 3 systems)
Owner:
CalMat
Location:
Pleasanton, California
Project:
Scrubber Station
Scope:
Design, engineer, manufacture and install two scrubber discharge chutes.
Completion:
April 1998
Owner:
RMC Pacific Materials
Location:
Davenport, California
Project:
Overland Conveyor (3.5 miles)
Scope:
Design, engineer, manufacture and supervise installation of three beltline junction chute systems; including slide beds, 36' long canoe sections, ceramic canoe liners, SureSeal skirting and safety access doors.
Completion:
February 1998
Owner:
Calmat
Location:
Pleasanton, California
Project:
Primary Scrubber Station
Scope:
Design, engineer, manufacture and supervise installation of three new 6' diameter x 33' long primary trommel screens.
Completion:
May 1997
Owner:
RMC Pacific Materials
Location:
Davenport, California
Project:
Primary Crusher Station and overland beltline chutes
Scope:
Design, engineer, manufacture and supervise installation of three new primary ore chutes.
Completion:
February 1997
Owner:
Pegasus Florida Canyon Mining
Location:
Imlay, Nevada
Project:
R.O.M. Haul Truck Lime Loading System
Scope:
Design, procure, manufacture and erect turn-key automated lime loading system for CAT 785 (150 ton) haul trucks.
Completion:
October 1996
Owner:
Southern Peru Limited (Asarco)
Location:
Ilo Smelter, Ilo, Peru
Project:
Flux and Reverts Crushing and Loadout System
Scope:
Consulting services to evaluate existing crushing system. Recommend remedial action required and estimate cost of design, procurement, manufacture and installation of system revisions.
Completion:
November 1995
At the core, Rockland solves problems for the Mining & Cement industries. Everyone says that — Right? Maybe, but at Rockland we have a proven track record with many clients over many years. Above are just a few areas that may interest you.
Rockland has a long history of satisfied clients that can serve as references.
A Division of Valley Rubber