Public Health Commons^™

Risk-Reduction Research In Occupational Safety And Ergonomics: An Editorial, Roger C. Jensen, David P. Gilkey

Safety Health & Industrial Hygiene

Occupational health and safety is one of the pillars of public health. The magnitude of occupational injuries, illnesses, and fatalities has been well documented through retrospective analyses of existing record systems. This Special Issue in IJERPH sought research papers addressing risk reduction studies in occupational safety and ergonomics.

Risk Assessment Matrices For Workplace Hazards: Design For Usability, Roger C. Jensen, Royce L. Bird, Blake W. Nichols

Safety Health & Industrial Hygiene

In occupational safety and health (OSH), the process of assessing risks of identified hazards considers both the (i) foreseeable events and exposures that can cause harm and (ii) the likelihood or probability of occurrence. To account for both, a table format known as a risk assessment matrix uses rows and columns for ordered categories of the foreseeable severity of harm and likelihood/ probability of that occurrence. The cells within the table indicate level of risk. Each category has a text description separate from the matrix as well as a word or phrase heading each row and column. Ideally, these header …

Fall-Protection Harness Training: Donning Skill Improves With Up To Four Repetitions, Zachary Bunney, Roger C. Jensen, Daniel Autenrieth

Safety Health & Industrial Hygiene

Injuries and fatalities from falling remain a major occupational safety concern. Among the multiple tactics for preventing fatal falls is the use of personal fall protection involving wearing a harness connected to a secure anchor point. This requires training to ensure trainees understand the importance of fall protection and have the skill to implement it correctly. One important skill is donning a fall protection harness and adjusting the straps. Those who conduct training on fall protection need to coach trainees through the steps involved in donning a harness. This study was undertaken to learn the benefits of practicing with the …

2021 Final Butte Reduction Works (Brw) Phase I Quality Assurance Project Plan (Qapp) Revision 3. February 2021, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Selecting Appropriate Words For Naming The Rows And Columns Of Risk Assessment Matrices, Roger C. Jensen

Safety Health & Industrial Hygiene

The risk management systems used in occupational safety and health typically assess the risk of identified hazards using a tabular format commonly called a risk assessment matrix. Typically, columns are named with words indicating severity, and rows are named with words indicating likelihood or probability. Some risk assessment matrices use words reflecting the extent of exposure to a hazard. This project was undertaken with the aim of helping the designers of risk assessment matrices select appropriate names for the rows and columns. A survey of undergraduate students studying engineering or occupational safety and health obtained ratings of 16 English language …

Ladder Safety: A Taxonomy Of Limb-Movement Patterns For Three Points Of Control, Roger C. Jensen

Safety Health & Industrial Hygiene

Traditional guidance on ladder safety emphasizes training workers on the use of three points of contact. More recent guidance is to train workers to use three points of control. What is lacking is empirical information about what limb-movement patterns effectively support the use of three points of control. This project was conducted to establish a taxonomy of possible limb-movement patterns and a means for comparing relative safety. Prior to the experiment, a taxonomy of six possible limb-movement patterns was established. A sample of 20 undergraduate students performed four tasks each without any instructions on limb-movement pattern. The tasks were ascending …

Firefighter’S Workers’ Compensation Claims In Montana, 2007-2017: A Cost Analysis, Rylie Mutzenberger, Julia Brennan, Emily Healy, Theresa Stack, Amy Kuenzi, David P. Gilkey

Safety Health & Industrial Hygiene

The objective of this study was to examine costs associated with workers’ compensation claims from firefighters in Montana. Workers’ compensation claims data were obtained from the Montana Department of Labor and Industry. The highest proportion of total benefit amount dollars was paid to male firefighters (93.7%), public employees (84.8%), and those who were 45-54 years of age at time of injury (23.9%). Part-time employees represented the employment category receiving the highest total benefit amount ($766,354). July represented the month with the highest average total benefit amount cost ($52,084). Strains and sprains, back injuries, and lifting activities all represented the highest …

Atvs And Agriculture: A Review Of The Literature, Hali Neves, William Brazile, David P. Gilkey

Safety Health & Industrial Hygiene

The purpose of this article was to provide a review of the published literature pertaining to agricultural All-Terrain Vehicle (ATV) use and injury, fatality, exposure assessment, risk estimation and interventions. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) technique was used to identify high quality relevant articles pertaining to ATV-related injury, fatality, exposure assessment, risk estimation, and interventions in an agricultural setting. Inclusion criteria for articles included publications from January 1, 2000 through August 31, 2016, use of injury epidemiology assessment tools, NIOSH hierarchy of controls and the W.K. Kellogg Foundation Logic Model Development Guide. Thirty-four articles met …

Stairway Uniformity Measurement: What Lateral Location Should Be Measured, Roger C. Jensen, Lee Calf Looking

Safety Health & Industrial Hygiene

An experimental study sought to extend understanding of the nosing-to-nosing method for measuring dimensions of steps in a stairway. A human factors expert retained to assist an attorney in a case of injury or death from a stairway fall needs to decide the lateral location for taking the measurements. This experiment was undertaken to provide experts with a justifiable basis for choosing the location. Using a campus stairway and 16 student subjects, a randomized complete block experiment compared their lateral location while performing four tasks—ascending with or without the handrail, and descending with or without the handrail. Results showed task …

Fall Protection Training: A Case Study Using Cbt For Latino Construction Workers, David P. Gilkey, Carla Lopez Del Puerto, Megan R. Miller, Carlos Evia, Carla Lopez Del Puertoisnow

Safety Health & Industrial Hygiene

Latino construction workers are at an increased risk of worksite injuries and fatalities due to language, cultural barriers, and ineffective training. This case-study investigated computer-based video training (CBT) for scaffold safety. The CBT training was developed using a participatory approach involving direct input from Latino roofers and framers. This paper focuses on evaluation-improvement of training that combined workers’ ideas of a safe work environment with OSHA standards. Researchers investigated the appropriateness and effectiveness of a brief CBT presentation addressing fall protection and scaffold use among Latino roofers. The results indicated that Latino construction workers at a roofing company in Colorado …

A Case Study: The Development Of Safety Tip Sheets For Atv Use In Ranching, Elise Lagerstrom, David P. Gilkey, John Rosecrance, Stacy Hibiske

Safety Health & Industrial Hygiene

Use of all-terrain vehicles (ATVs) has become standard practice on the modern ranch. The unique operating conditions present on a ranch, subject the occupational ATV user to hazards requiring awareness and specialized training. The purpose of this study was to apply social marketing methods to address a specific environmental health and safety issue present in the agricultural industry. A series of four ATV tip sheets were created in topic areas specific to the challenges that ATV operators encounter on a ranch. In order to evaluate the intended audiences’ perception of the tip sheets, a questionnaire was administered to all agriculture …

Atv-Related Workers’ Compensation Claims In Montana, 2007–2012, Elise Lagerstrom, David P. Gilkey, John Rosecrance, David J. Elenbaas

Safety Health & Industrial Hygiene

The objective of this study was to analyze workers’ compensation injury and fatality data associated with the occupational use of all-terrain vehicles (ATVs) in Montana. Data were provided by the Montana Department of Labor and Industry Workers’ Compensation Injury and Occupational Disease Database. Claims were identified based on a search of injury codes related to vehicular claims and then narrowed by a keyword search for events related to ATVs. Two hundred and fifteen ATV-related claims were identified between 2007 and 2012. The majority of claimants were identified as male (85%), with 23% of total claims between the ages 20–29 at …

Field Study Confirms The Belief That Keeping Busy Helps Control Room Operators Sustain Alertness During The Night Shift, Roger C. Jensen

Safety Health & Industrial Hygiene

Control room operators in a nuclear power plant participated in this on-site study to test the belief that keeping busy helps sustain alertness. Since circadian rhythms strongly affect alertness, the study was designed to account for different times of the 24-hour day.The participating reactor operators worked rotating 8-hour shifts in the control room. Every 20 minutes they reported their alertness and their workload during the preceding period. These ratings were obtained throughout three of each shift, for a total of nine shifts and 560 pairs of ratings. Reduced alertness ratings (2 and 3 on the 9-point alertness scale) occurred only …

A Measurement System Experiment To Evaluate The Nosing-To-Nosing Method For Measuring Dimensions Of Steps, Lea S. Jensen, Roger C. Jensen, Craig E. Ross

Safety Health & Industrial Hygiene

Non-uniformity of steps within a flight is a major risk factor for falls. Guidelines and requirements for uniformity of step risers and tread depths assume the measurement system provides precise dimensional values. The state-of-the-art measurement system is a relatively new method, known as the nosing-to-nosing method. It involves measuring the distance between the noses of adjacent steps and the angle formed with the horizontal. From these measurements, the effective riser height and tread depth are calculated. This study was undertaken for the purpose of evaluating the measurement system to determine how much of total measurement variability comes from the step …

Stairway Step Dimensions: Replication Of A Measurement System Study, Christopher Hicks, Roger C. Jensen, Joselynn M. Adams

Safety Health & Industrial Hygiene

This paper reports a replication of a prior measurement system study. The earlier study examined the nosing-to-nosing measurement system for measuring steps in a stairway to determine uniformity. In each study, two individuals measured six flights of stairs on two separate occasions. The difference in the first and second study was the different measurers. Step attributes used to define uniformity are riser height and tread depth. The measurers in each study obtained 744 values of riser height and 672 values of tread depth. The ANOVA for each study indicated that less than 4% of the variance in these attributes was …

The Presence Of Asbestos-Contaminated Vermiculite Attic Insulation And/Or Other Asbestos Containing Materials In Homes And The Potential For Living Space Contamination, Terry Spear, Julie Hart, Tessa Spear, Molly Loushin, Natalie Shaw, Mohamed Elasheb

Safety Health & Industrial Hygiene

Asbestos-contaminated vermiculite attic insulation (VAI) produced from a mine near Libby, Montana, may be present in millions of homes along with other commercial asbestos-containing materials (ACM). The primary goal of the research described here was to develop and test procedures that would allow for the safe and effective weatherization of low-income homes with asbestos. The presence of asbestos insulation was confirmed by bulk sampling of the suspect asbestos material. The homes were then tested for the presence of asbestos fibers in the living spaces. All 40 homes containing VAI revealed the presence of amphibole asbestos in bulk samples. Asbestos (primarily …

Occupational Health And Safety Management Systems Assessment Training, William Brazile, Daniel Autenrieth, Del Sandfort

Safety Health & Industrial Hygiene

An occupational health and safety management system (OHSMS) is required for all Federal agencies by Executive Order 12196 – Occupational safety and health programs for Federal employees. Development of the Occupational Health and Safety Management Systems Assessment Training Manual was supported jointly by the U.S. Veterans Health Administration (VHA) and the Occupational Safety and Health Administration (OSHA). The manual was designed to be used in the training of government personnel on how to assess the OHSMS of Federal establishments and agencies. The manual is organized sequentially through each step in the process of conducting an OHSMS assessment. Trainees start …

Effects Of Standard Labor-Wear On Swimming And Treading Water, John Amtmann, Edd, Les Harris, William K. Spath, Charles Todd, Phd

Applied Health Sciences

We tested the hypothesis that occupational clothing would impair performance during swimming. The sub questions included: (1) Will the standard work wear of a railway worker or laborer impede swimming ability? (2) Will this clothing impact the individual’s ability to tread water? We addressed the research questions with three hypotheses. Analysis showed statistically significant p-values and all three null hypotheses were rejected in favor of the three research hypotheses, showing strong evidence that standard labor wear had adverse effects on 11.43 meter/12.5 yard swim time, water treading time and rate of perceived exertion (RPE) during water treading. The mean swim …

Developing Higher-Level Cognitive Skills In A Fire Protection Course, Roger C. Jensen

Safety Health & Industrial Hygiene

In an ideal world, all instructors of safety and health courses would be masters of course subject matter as well as the theories and practices for effective teaching. In practice, however, most instructors are much stronger in one or the other. This paper provides an example of how some fundamental knowledge from educational experts can be useful for improving a traditional safety course.

Is there a problem with the way traditional safety and health (S&H) courses are taught? It is asserted by this author that S&H education, in general, places too much emphasis on acquisition and comprehension of facts at …

The Effect Of Respirator Wear On Blood Lactate During Maximal Exertion, Austin Anderson, Fred Sullivan, Sally Bardsley, Roger C. Jensen

Safety Health & Industrial Hygiene

The impact of a filtering half-face respirator and a half-face supplied air respirator use on blood lactate production was assessed during maximal exertion to determine if anaerobic strain increased compared to no respirator use. Twenty-eight participants performed a 30 second cycling Wingate anaerobic test (WAnT) wearing a half-face respirator. Blood lactate production was measured to evaluate if there was an increase in anaerobic strain from wearing a tight fitting half-face respirator compared to wearing no respirator. A supplied air respirator WAnT was then performed using 18 participants from the first experiment to evaluate if supplied air decreased anaerobic strain. Data …

Strengthening A Traditional Fire Protection Course By Using Fault Trees, Roger C. Jensen

Safety Health & Industrial Hygiene

Traditional courses and textbooks in occupational safety emphasize rules, standards, and guidelines. This paper describes the early stage of a project to upgrade a traditional college course on fire protection by incorporating learning materials to develop the higher-level cognitive ability known as synthesis. Students will be challenged to synthesize textbook information into fault tree diagrams. The paper explains the place of synthesis in Bloom’s taxonomy of cognitive abilities and the utility of fault trees diagrams as a tool for synthesis. The intended benefits for students are: improved abilities to synthesize, a deeper understanding of fire protection practices, ability to construct …

Formats For Section Safety Messages In Printed Manuals, Roger C. Jensen, Erin Jenrich

Safety Health & Industrial Hygiene

This study compared four formats for safety messages in printed manuals based on layouts found in a new standard of the American National Standards Institute (ANSI Z535.6, 2006). These four designs are specifically for use as section safety messages. Two used a signal word panel, and two used a safety alert symbol (exclamation in a triangle). The four formats were rated by 55 college students from three different classes using a five-point scale for hazardousness. All four messages were presented on the same page of a test booklet, with order balanced using a Latin Square. Results of a Friedman test …

Risk Reduction Strategies: Past, Present, And Future, Roger C. Jensen

Safety Health & Industrial Hygiene

Several respected authors have proposed short lists of all strategies for controlling hazards or reducing risks from hazards. This article reviews those attempts and proposes an improved list of nine risk reduction strategies.

Materials-Handling Hazard Controls: Assessment Of Haddon’S Injury Control Strategies, Roger C. Jensen, P. Patton, J. Griffith, C. Hogan

Safety Health & Industrial Hygiene

This investigation assessed the applicability of Dr. William Haddon’s strategies for controlling hazards involving materials-handling operations in industrial and mining workplaces. Published over 20 years ago, Haddon’s strategies purport to include all strategies for preventing and mitigating harm to people, property, and the environment. Students in an undergraduate class were assigned to find tactical examples of each of Haddon’s strategies applicable to material handling. Haddon’s tenth strategy involving medical care and rehabilitation was not included. Their classifications were analyzed to identify points of confusion as well as points of general agreement. Students found numerous tactics for strategies involving engineering and …

Are Warnings On Plastic Films Adequate?, David S. Leonard, Roger C. Jensen, Tammy Lynn

Safety Health & Industrial Hygiene

Warnings are used to inform users of hazards that may be associated with many products. Often these warnings deal with the operation of tools, appliances, and other items for which the user may have some reason at least, to look for information on the product regarding its use. Plastic film presents a serious hazard to young children. Because the film will adhere to the flesh, if it covers the airways for the child, suffocation may result. Because young children may play with them, it is important that such films be kept away from them. Warnings need to be adequate to …

Safety Training: Flowchart Model Facilitates Development Of Effective Courses, Roger C. Jensen

Safety Health & Industrial Hygiene

Few SE&H professionals have time to keep up with the voluminous literature about safety and health training. An easier strategy involves adopting a model of the training process, such as the one described in this article. The model is presented as a flowchart to show the relationships among the component processes for all safet\' and health training. It is intended to be a flexible model, suitable for tailoring to organizational needs, and easy to conceptualize. By learning this model, SH&E professionals will have a solid understanding of Ihe processes involved in developing and implementing an effective safety training program.

Comparison Of Warning Labels On Plastic Bags, Tammy Lynn, Roger C. Jensen

Safety Health & Industrial Hygiene

Most plastic bags in our society contain a warning about the suffocation hazard, yet the U.S,. Consumer Product Safety Commission still receives approximately 24 reports annually describing deaths of children who suffocated due to plastic bags.

This study examined three of the warning features on plastic bags: (1) border versus no border, (2) position of the signal word relative to the text, (3) all capital letters versus sentence case. Ratings provided by more than fifty students indicated highly significant effects of the border on noticeability, and position and letter case on reading likelihood. Strongest effects were from presence of a …

Communicating Severity Of Hazard With The Signal Word On A Safety Sign, Roger C. Jensen, Andrew M. Mccammack

Safety Health & Industrial Hygiene

An experiment examined five signal words on safety signs for effectiveness at communicating information about severity of a hazard. Perceived severity was rated by 59 college students for the signal words Deadly, Danger, Warning, Caution, and Notice. Results indicated that Deadly communicated the highest ratings for severity. Danger was second. Warning and Caution were tied for third. The lowest ratings were for Notice.

Comparison Of Student Versus Employee Test Populations For Warning Sign Research Based On Severity Ratings For Signal Words, Scott Thomas, Roger C. Jensen

Safety Health & Industrial Hygiene

Most studies of warning signs involve undergraduate students as subjects. This paper reports a direct comparison of findings from an undergraduate population and an employed population. The 48 employed subjects from this study were compared with 59 undergraduate subjects from a companion study. Subjects from both populations were shown the same signs and asked to rate the severity level connoted by each sign. The signs differed only in signal word. Results for each population indicated that signal word had a highly significant effect on severity ratings. When the two populations were compared for ratings of each signal word, the only …

Severity Message From Hazard Alert Symbol On Caution Signs, Roger C. Jensen, Andrew M. Mccammack

Safety Health & Industrial Hygiene

Standards for the design of signal word panels specify different combinations of colors, signal words, and a hazard alert symbol. The warning sign standards of the American National Standards Institute specify a yellow signal word panel, with the word Caution and a hazard alert symbol, for signs marking people hazards. The same panel, without the symbol, is intended for property hazards. The purpose of this study was to determine if the presence or absence of the symbol effectively conveys the intended severity messages. A sample of 59 college students rated their impressions of a Caution sign with and without the …