DNM PT - Excavator

Single/Double Bench Mining

Bench - Stick Length

Swing Angle - 60-90 degrees

Application Conditions

OEM Performance Capabilities Achievable

Target Passes Achieved

Target Swing Time Achieved

Work Area Setup and Risk Managment

Machine Health

Bench Preparation

Single Bench Loading Technique

Top Loading Technique

Double Bench Loading Technique

Correctional Cut Technique

Compliance to Coal Mining Methodology

Control of the Work Area - small excavator/dozer

Minestar Fleet Compliance - delays, material type etc.

Minestar Terrain Compliance - floor, batters etc.

Water Management

Timely and thorough hotseat handover conducted

Delays selected and mine control forewarned/informed of extended delays

Controls the work area i.e. plans with, and delegates work to the excavator support equipment

Reports under/over trucking

Correct Minestar plan and material files selected when required

Conducts cleanup/bench prep during hang time

Provides feedback/guidance to truck operators when required

Coal roof/floor persevered - loss/dilution management

Rounds off the start and end corners of bench

When mining a wedge, the low edge is faced up by the dozer before the excavator reaches it

Before each load the excavator is positioned to maximise bucket fill factors

Trucks are positioned to maximise bucket fill and minimise passes

Excavator is moved back during loading to continue maximising bucket fill factors

First bucket taken from the key/furthest point

Bucket is only opened far enough to precisely place material in truck tray

Stick out is used to assist material to quickly leave the bucket over the truck

Bucket/stick angle adjustments are made swinging out of the truck, instead of at the bench toe

Not "gardening" or over reaching during normal loading

The bucket dig cycle ends before the stick is 15deg past the vertical position

"Booms up" only enough to utilise "stick out" into the tray

Swing angles <90 degrees (unless on a wide cut/thin seam)

Wider cut taken on low bench

Excavates corners productively

Consistent dig pattern demonstrated

Demonstrates building a safe ramp and safe walking on/off bench practices

Excavates a walk off ramp with the last truck prior to a service/refuelling delay

Takes no half buckets

Shows a productive mindset i.e. is always ready to spot the truck when one arrives

Sump location is surveyed and sediment traps constructed

Demonstrates payload monitoring and management to reduce passes/buckets per truck

Target payload average is monitored and maintained

Truck load is centred/contained

What is the exclusion zone that exists around powerlines and electrical installations?

What is the location of all emergency stops on machine?

What is an open edge, and what are the berm/bund requirements?

What is a high risk berm/bund and what are the placement, design and approval requirements?

When are documented safety checks and full plant hazard checklists completed?

What action is taken when a misfire or blasting product is observed/suspected in dig face?

In what circumstances can a dozer clean up in the swing radius of the excavator?

Can trucks self spot while top loading?

Can trucks wait with rear of the truck to the loading machine (outside the swing radius and not in reverse)?

Can trucks wait with rear of the truck to the loading machine (outside the swing radius and not in reverse)?

Can trucks wait with rear of the truck to the loading machine (outside the swing radius and not in reverse)?

Emergency procedure for onboard fire was correctly explained/simulated

Use of emergency access/egress systems was correctly explained/simulated

All fluid levels can be identified and checked

Hydraulic tank venting/pressure release

TRUE/FALSE: If offside loading is to be carried out, truck operators must wait until the bucket is presented

TRUE/FALSE: If truck is overloaded, the load is to be tipped at the face

TRUE/FALSE: It is not permissible to offside load trucks while top loading

TRUE/FALSE: Coal is not to be trenched on the floor on the high-wall side

EXPLAIN: Four work area hazards and applicable controls

EXPLAIN: Track tension checks and actions

EXPLAIN: Three (3) techniques to maintain excavator stability on a bench that is slumping, shearing and/or cracking

EXPLAIN: Four (4) ways to fulfil obligations of all CMW's to never expose themselves or any other person to an unacceptable level of risk

EXPLAIN: Consequences of digging towards travel motors

EXPLAIN: Primary stand off distances and what is required to enter primary stand off zone

EXPLAIN: Specific bund requirement for 180deg top loading

EXPLAIN: Separation requirements for queuing trucks

EXPLAIN/DEMONSTRATE: Construction of a safe ramp for an operator to walk on/off the bench on foot

EXPLAIN/DEMONSTRATE: Construction of a safe ramp for an excavator to walk on/off the bench